Frequently Asked Questions


Connected watches

The T-Touch Connect Solar is equipped with Bluetooth and requires the use of a smartphone that runs on Android 9.0 or above, or iOS 16.0 or above.

The connection between your watch and your phone is made via the Tissot app, thus enabling you to receive various notifications directly on your watch. It is perfectly possible to use your watch without connecting it to your phone, but these functions will not be available.

In your phone’s app store, search for the Tissot T-Connect app and install it. If it is not possible to perform this procedure, please contact our Customer Service department.

The Tissot application and watch are compatible with most Android phones (as of September 25th) and iOS.
However, iOS 16.x or older versions and Android 9.x or older versions are not supported.
Some models of telephones have manufacturer's specifications that make them incompatible with each other:

  • Xiaomi M8 Lite


  • Blackberry Key 2 LE


  • Samsung A21 S


  • Sony XZ3


  • Iphone SE (second generation)


  • CAT S60


    If you are experiencing problems specific to a particular phone model, please let us know.

    Like any high-precision instrument, a watch needs to be serviced regularly to ensure optimum functioning. The servicing frequency depends on the model, the climate and the care you take of it. As a general rule, we recommend that you have a service carried out every 4 to 5 years by a Tissot-certified service centre.

    The Function “Settle” is used to update the current timers of the watch directly from the phone.

    The watch will update to firmware version 1.1.16 to improve and correct bugs for a better user experience.

    You can delete your account at any time using the mobile app settings. Your personal data are deleted immediately. When you delete your account, the phone automatically disconnects from the watch.

    The connection distance between watch and phone varies considerably depending on the environment you happen to be in. The average distance is between 10 and 20 metres.

    Check that the watch’s Bluetooth (T-Touch touch zone) and the phone’s Bluetooth are both activated. If they are, check that the Time 1 time zone is “Phone” (the hands display the Time 1 time).

    The watch’s battery life varies considerably depending on how the watch is used and its exposure to sunlight. In ideal conditions, the watch has a battery life of up to 6 months if connected and 10 years if used independently (without the app).

    To connect your phone to your T-Touch Connect Solar, please follow the various steps set out in our User Manual"

    Provided the watch is within range of the phone, it is not supposed to disconnect. However, when the watch is disconnected for more than 2 hours it turns off Bluetooth, which must then be reactivated manually.

    The watch is only in English at the moment. French, Italian, German, Spanish and Chinese will be available on the beginning of 2021.

    Currently, the timer do not create any confirmation message of launch, you can nonetheless confirm that the timer as begun via the hourglass logo that appears at the top left of the watch screen.

    Delete the T-Touch Connect app from your original phone, install it on the new one, and use your user ID and password to connect and recover your data.

    Check that Bluetooth is active on both your watch and your phone. If data on the watch and on the app are different, it may be that synchronisation has not occurred. Synchronisation occurs automatically every 15 minutes.

    If you are not receiving notifications on your watch, check the following points:

  • Check your watch is properly connected to your phone (Bluetooth icon displayed on the watch).

  • Activate the “Notification” option in the watch settings.

  • Check in your phone settings that the app has the necessary permissions to send notifications.

  • If your app has stopped responding, you need to use the settings on your phone force the app to shut down. Then restart the app.

    The hands show the time set in Time 1. Lock the watch onto Time 1 if you want the time on the screen to be the same as on the hands.
    You can also synchronise the hands in the watch’s Sensors & Motors menu, by selecting: T-Touch/Settings/Sens.&Motors/Motors/Calibrate the hands

    These data are obtained by means of algorithms that use the data provided in the user profile (height, weight, gender).

    Your watch’s pedometer counts steps according to your wrist movements. When you are driving, particular movements might be counted in the same way as when you are walking (just as with any other model of connected watch). The calculation of these “extra steps” is built into the margin of error tolerated by your activity tracker.

    Check that your watch is placed on the charger correctly (back of watch flat against the charger). When your watch is on the charger, a charging symbol appears on the watch. If you have checked all this and your watch is still not charging, please return it to us free of charge using our prepaid dispatch service.

    In case the T-Touch Connect Application is not open or do not work on the background or was fully closed, the function “Find my watch” will not work. Furthermore the IPhone will broadcast the alert at the current audio level of the phone. If the phone settings are turned down or off, you may not hear the alert. 

    If your watch’s screen is black, this means the watch is switched off or in \Auto Sleep\" mode.
    - If your watch is switched off :

  • Press the crown for about 5 seconds to turn it on 

  • Press the 3 push-pieces simultaneously for 3 seconds 

  • If this happens when the watch is connected to your phone, you need to re-initiate the watch-pairing procedure.
    - If your watch is in \"Auto Sleep\" mode:
  •  Press one of the push-pieces in order to reactivate it.

  • "

    When you have been disconnected for more than 2 hours, the watch turns off Bluetooth technology to reduce power consumption.
    If you do not wish to manually reconnect your watch every morning, you can activate the \auto sleep\" mode.
    T-Touch Function > Settings > System > Energy savings > Auto Sleep
    When this mode is activated, the watch automatically enters the sleep mode when not worn for at least 2 hours.
    Simply press one of the pushers to reactivate your watch and it will automatically reconnect to your phone.
    When the watch is \"sleeping\", the hands are stopped and the display, backlight and Bluetooth® are switched off to save energy."

    In order to try again, we recommend that you do the following:
    ◊ Smartphone  | ◽ T-Touch Connect

  • Disconnect the account from the app (Settings/My Profil/Deconnect)
  • Desinstall the application
  • Forget the watch from the Bluetooth settings
  • Restart the phone.
  • Restart the watch
  • Activate the tactile glass
  • Press the T-Touch Function
  • Turn the crown until you see restore to factory settings (Settings / System / Restore to factory settings)

  • Install the T-Connect app.
  • Connect the account
  • If the search of the watch do not start press the watch’s logo with the + (top left corner)

  • Start the watch in connexion mode
  • Welcome --> Press the crown
  • Select the language
  • Pair with phone --> Yes
  • Date of the day (same as phone)
  • Confirm the 6 digits code on the phone(same as the watch)
  • Confirm the 6 digits code on the watch (same as the phone)
  • Decline the password on the watch.

  • Set the app  (authorized all the demand on the phone)

  • For more precision, you can follow the procedure on :

    When you are disconnected for more than 2 hours, the watch turns Bluetooth off in order to reduce energy consumption. This means your watch will automatically reconnect when you are near your phone.
    Check the status of Bluetooth in T-Touch menu -> Quick Settings -> Bluetooth and activate it if necessary.

    Some phones running on the Android operating system do not allow apps to launch tasks in the background (including the one that allows reconnection) without the user’s intervention.
    Here is the procedure for activating this option:
    Go to the Settings menu and select Apps -> Permissions -> Autostart.
    The battery-saving options may also prevent reconnection because they restrict background running and Bluetooth scanning:
    Go to the Settings menu and select Apps -> Manage apps -> Select the App -> Battery saver -> No restrictions.
    If this does not suffice, you can also set different permissions in the “Other permissions” menu in the app’s settings (just above the Battery-Saving menu) to ensure the app can run in the background and when the phone is locked.
    In addition, if the date and time on your phone were set manually and are different from the date and time in the country you are currently in, this may prevent reconnection between phone and watch.

    The Swiss Watches Autonomus Low Power System or Swalps is the operating system developed by Tissot in partnership with the CSEM in Neuchâtel. This operating system is therefore entirely independent and the exclusive property of Tissot. It is thanks to this operating system that Tissot can guarantee very low energy consumption by its connected watches and consequently an unrivalled charging time in the connected watch market.

    Our connected watches are manufactured with all our know-how as a Swiss watchmaking company and are available in a variety of colours and bezels with noble materials such as ceramic, titanium and sapphire crystals, all with classic watchmaking finishes. In addition, the operating system of our connected watches is developed by Tissot. This operating system allows us to guarantee a battery life well beyond anything our competitors can offer, as well as total confidentiality regarding data management. Finally, our connected watches are covered by a 10-year repair period following the date on which production of the model in question ceases.

    The calculations are carried out directly by the watch according to the body data recorded in the watch.

    Training zone data is currently calculated using the age recorded by the user. Today, this data is based on a standard user average.

    Unfortunately, the wide variety of different devices and programs means that it's more complicated to develop systems that are compatible with Android. To ensure that we can

    No, the new T-Touch Connect Sport does not have a GPS chip. Geolocation functions are only available via the smartphone. Consequently, any activity requiring location (outdoor activity) must be activated with the connected phone.

    We have noticed that some Android devices do not handle notifications like others. The phone may not display the code directly. To see it and validate it, please select the Bluetooth notification and open it by clicking on it.

    On our new version, we can connect several watches, in order to avoid all the watches linked to the application dashboard and there being interference from one watch to another, we make sure that one watch has priority. This is why the preferred watch is the watch linked to the application and more specifically to the application dashboard.

    On our new connected watch, we've removed the various sensors present on the first generation (barometric sensor, thermometer, compass). This has freed up a lot of space and enabled us to produce a smaller watch. We've also added a heart rate sensor to this new model, following numerous suggestions from our users of the first connect model.

    No, this is not normal. However, it is possible that the application needs some time to synchronise all the information. This is why you need to wait up to 60 seconds for the synchronisation to be complete. However, if the behaviour repeats itself, we recommend that you shut down the application completely or force it to do so.

    ◊ Smartphone ◽ T-Touch Connect Sport


  • ◊ Disconnect account from the application (Settings/My Profile/disconnect).
  • ◊ Uninstall the application.
  • ◊ Forget the device in the Bluetooth settings.
  • ◊ Restart the phone.
  • ◽ Restart the watch.
  • ◽ Activate the touch screen.
  • ◽ Swipe on the touch screen until you find the reset menu (Settings/Advanced/Reset).

  • ◊ Ensure internet connection (install Tissot App: "T-Connect").
  • ◊ Connect the customer's account.
  • ◊ if the watch search does not start automatically select the watch logo with + (top left).

  • ◽ Start the watch in connection mode.
  • ◽ Select the language.
  • ◽ Pair mobile --> yes.
  • ◊ Confirm the same 6-digit code on the phone as on the watch (on some models you need to open the Bluetooth notification to see it).
  • ◽ Confirm the same 6-digit code on the watch as on the phone.
  • ◽ The firmware accounting check begins:
  • ◽ If the firmware on the watch is not the latest, an update begins and a loading bar is displayed.
  • ◽ At the end, the new firmware version is displayed on the screen.
  • ◽ Restoration of the data on the watch is complete.

  • ◊ Parameterise the application (authorise all requests from the phone).


    The heart rate sensor in our watch uses an optical system to detect movements of the skin as a result of the pulse beat. In order to ensure that the sensors (the little green diodes) perceive these movements as accurately as possible, it is necessary to ensure that they are pressed against the wrist as much as possible. That is why, to get the best data, we recommend that you squeeze the strap of your watch as tightly as possible.

    You can extract your activity data at any time, either by e-mail (standard GPX format) or by sharing it directly with the application of your choice (Strava, Google Maps, etc.). This extraction allows you to track your routes, share your activities, analyse your performances, or even share them. To share, simply go to the T-Connect application, select your saved activities, and choose one with GPS data. Then click on the three little dots at the top right and select: share route. Finally, all you have to do is choose the application with which you want to transmit your information.


    Yes, we offer a 2-year international warranty.

    Tissot sells its watches exclusively through its global network of certified distributors, whose addresses are listed in the Retail Outlets section.
    Furthermore, Tissot watches are sold with an international warranty card completed by the retail outlet and stating the serial number, reference of the watch, as well as the full name and address of the reseller.
    If in doubt regarding the origin of your watch, you can contact your closest service centre to carry out a complete analysis of your Tissot.

    To check the warranty status of your watch, you need to perform the following steps:
    1.  Go to section «My Account»
    2.  Press the button «Create Account» and fill in all fields.
    3.  Go to the section «My Clock» and choose the item «Add Clock».
    4.  Enter the serial number of your watch.
    5.  Choose the type of guarantee - if you have been given a white guarantee card - choose the item «physical guarantee», if you have been given a black guarantee card (it is not obligatory, on it only QR code with a reference to the section «my watch») - choose an electronic guarantee.
    6. Under the image of the clock you have to choose «international guarantee» - there will be specified date of purchase and term of warranty service for your hours (2 or 3 years depending on the version of mechanism).

    The site presents a range of models selected from the expansive Tissot collections. To see more watches, visit one of our official resellers. Please note that some watch models present on the website are not available in all countries. For more information contact an official Tissot representative.

    Tissot watches are exclusively sold through its global network of certified resellers, comprising more than 13,000 retail outlets. You will find the list of authorised resellers in the Retail Outlets section.

    The mention “WS” (WATCH-SECUR™ Abbreviation)  followed by an alphanumeric code of 9 characters, corresponds to a new generation serial number for Tissot watches. The code, secured by an algorithm, held exclusively by Tissot, allows the brand to trace the watches individually from the production in Switzerland to the delivery in the official points of sales of certain countries. All the watches produced as of 2016 possess a WATCH-SECUR™ serial number.

    User's manual are available in the Warranty and user's manual section. You can also contact one of our official representatives in your country. 

    Functioning of the watch

    Tissot watches are designed to be water resistant to a pressure of 3 bar (30m/100ft), 5 bar (50m/165ft), 10 bar (100m/330ft), 20 bar (200m/660ft) or 30 bar (300m/1000ft), as indicated on the case back.
    Watches are pressure tested in a laboratory by means of tests conducted at various pressures corresponding to the pressure experienced by a swimmer or diver sitting still at various depths. However, many water-based activities involve a lot of movement and other environmental changes which exceed the boundaries of the tests conducted and may therefore affect the water resistance of a watch.
    A watch's water resistance cannot be guaranteed indefinitely, as it may be affected by ageing gaskets or an accidental impact to the watch. As stipulated in our Watch care section we recommend that you have the water resistance of your watch checked once a year by an approved Tissot service agent. We also recommend that you do not under any circumstances open the watch yourself and do not adjust the time-setting crown and/or pushers (buttons) when your watch is underwater. Similarly, check that the crown is in position 1 (pushed in) or screwed down (depending on the model) before you enter the water.

    Precautions for use and care advice can be found in the Watch care section. In addition to that advice, we also recommend having a service carried out every four to five years by a Tissot-certified service centre.

    The precision tolerance of quartz watches is around -0.5 to +0.7 seconds per day (excluding certified quartz chronometers). Exposure to significant variations in temperature can have a slight effect on quartz movements. 

    A Lépine watch does not generally have a cover and the crown is at 12 o'clock.
    A Savonnette watch meanwhile does generally have a cover and the crown is at three o'clock.

    Both types of movement are mechanical movements, but are wound in different ways. Manual-winding watches must be wound every day by hand using the crown, whereas self-winding watches are wound by an internal rotor which responds to wrist movements. 

    The accuracy of the watch depends on the movement and individual habits of the wearer. The majority of mechanical watches (excluding certified chronometers) have average precision tolerances of between -10/+30 seconds per day. To earn the title of chronometer (see question relating to chronometers), the mechanical movement's average precision must be between -4/+6 seconds per day.

    Autoquartz movements combine the advantages of a quartz watch and a self-winding watch. If worn for 60 to 80 days, the movement reaches a maximum power reserve of 100 days. It offers the precision of a quartz movement and functions without a battery, instead having an accumulator which recharges automatically from the movement of the wrist. The swinging movements of your wrist cause an oscillating weight to rotate. Each of its rotation activates a micro-generator which in turn charges an accumulator with electrical energy. 

    This function allows the chronograph to be reset to zero without having to stop the chronograph first. This is often used in aviation, where several legs of a route are flown for specific periods of time in sequence. It saves time by beginning timing of the next leg without having to stop, reset and restart the chronograph. 

    The power reserve of a self-winding watch depends firstly on the type of movement. When fully wound, the movements of our watches have a  power reserve of between 36 and 80 hours. The power reserve also depends on the wearer's individual habits and activity. As an indication, 10 to 12 hours' wear should be sufficient to generate a power reserve of 20 hours or more, which ensures that the watch will continue to run throughout the night.

    Two ways of writing the number 4 are admissible: IV and IIII. There are various historical explanations for this. It is known that IIII was used for over four centuries, to avoid confusion between IV and VI when the watch is upside down. Another theory has it that in the 16th and 17th centuries, IIII was used to make it easier to read the time for people who were illiterate. Finally, it can be seen simply as an aesthetic choice, since IIII representing a better balance with the VIII opposite. 

    On a watch, a tachymeter is used to measure average speed over a given distance. To be specific it is a chronograph with a graduated scale on the dial or the glass, on which speed can be read off in kilometres per hour based on a 1000m distance.
    To read the tachymeter, only the chronograph's central hand is used. Start the chronograph and stop it once 1000m have been travelled. You can then read off the speed indicated on the dial by the chronograph's central hand. Example for calculating the speed of a car: the chronograph indicates that the distance of 1000m has been covered in 30 seconds. The chronograph's central hand indicates 120 on the tachymeter scale. The average speed over 1000m is therefore 120 km per hour.

    A bezel is an adjustable ring on the case, often used to record additional data, such as the duration of an event or to read the time in a second time zone. A bidirectional bezel can rotate in both directions, clockwise and anticlockwise. A unidirectional bezel only turns one way to prevent it accidentally turning in the wrong direction and therefore giving a false reading. When measuring diving time, for example, any impact or false manoeuvre can only reduce the pre-set limits, preventing the user from having an exaggerated interpretation of air or decompression time.
    To use a unidirectional bezel for deep-sea diving, place the bezel's main indicator (initially positioned at 12 o'clock) at the projected time for the end of the dive. When the minute hand meets the main indicator, the diving time will have been reached. For example, for a 30-minute dive starting at 15:00, align the bezel's main indicator with 15:30 (at six o'clock) just before diving. The minute will take 30 minutes to reach the bezel's main indicator, thereby indicating remaining diving time.

    A chronograph is used to measure time which has elapsed from a given moment. Its uses include timing the duration of a sporting event using the chronograph hand, accompanied by minute and hour counters. A chronograph therefore has two independent measuring systems: one to indicate the time and another to measure short periods of time.
    A chronometer is a high-precision mechanical watch, which has been awarded an official certificate by the official Swiss chronometer inspectorate (COSC). Chronometer movements undergo precision testing for 15 days and 15 nights in various positions and at different temperatures, as well as water resistance tests. To earn the title of chronometer, the mechanical movement's average precision must be between -4/+6 seconds per day.
    It is therefore possible for a chronograph to be a chronometer, but only if it has been awarded the certificate by the COSC.
    A quartz watch can also be certified as a chronometer by the COSC. For this, the movement must strictly be equipped with an electronic system to offset variations in precision caused by temperature changes. Quartz chronometers are tested for 11 days in one position and at three different temperatures. Quartz chronometers are up to 10 times more accurate than a standard quartz watch (± 0.07 seconds per day).

    Service maintenance

    Only service centres meeting the strict criteria relating to equipment and technical skills are supplied with original Tissot spare parts. This allows all customers to enjoy a service in line with Tissot's standards of excellence. 

    Battery life usually varies between two and five years depending on the type of watch, its dimensions and the amount of energy required by its various functions. For example, a watch whose chronograph is activated continually will have a higher energy consumption than a watch which only displays hours and minutes. Most Tissot watches have a battery EOL (End Of Life) indicator. When the second hand begins to jump every four seconds, it is time to have the battery replaced by a Tissot-certified watchmaker. 

    Like any high-precision instrument, a watch needs to be serviced regularly to ensure optimum functioning. The servicing frequency depends on the model, the climate and the care you take of it. As a general rule, we recommend that you have a service carried out every four to five years by a Tissot-certified service centre.

    All our watches are covered by a 24 month sales warranty from the date of purchase.
    The warranty conditions are provided in the warranty booklet supplied when the watch was purchased or in the Customer Service section.

    All servicing of your watch must be carried out by one of our authorized service centers. Any service not carried out by an authorized service center will void the warranty. A complete list of service centers is available in the Customer Service section. 

    The prices indicated in the Customer Service section should be considered as indicative. This is because the law in many countries prevents the imposition of retail prices. Each independent authorized service center is therefore free to set its own service prices. The recommended retail prices stated on this site are nevertheless valid in countries with an official service center belonging to the Swatch Group Ltd.

    To determine why a watch has stopped, a thorough analysis of the watch is required. A quartz movement - like all type of watch movements - has to be serviced regularly. After a thorough analysis, the authorized watchmaker can determine why the watch has stopped as well as identify the appropriate maintenance.

    A \partial\" service consists mainly in a battery replacement for quartz watches or an adjustement of the rate for mechanical watches. In addition, the replacement of  spare parts guaranteeing the water resistance are also included in this service. A service becomes \"complete\" when interventions on the movements turn out to be necessary (replacement of worn components and oils). All operations of the partial service are also included in the complete service."

    Services carried out by an authorized service centre are covered by a 24 month service warranty on the work carried out. This warranty does not cover normal wear and tear and damage caused by accidents or lack of due care. This warranty is void if any work is carried out by a third party that is not authorized.

    Servicing of your watch depends firstly on the availability of its components. From the date production of your watch ceases, we guarantee the availability of spare parts for a minimum of 10 years, and up to 20 years for gold watches. If production of a particular part is haltered or suspended for any reason, we reserve the right, at our sole discretion, to offer an alternative solution. We will also do our utmost to maintain collector's pieces and jubilee watches. 

    Magnetic fields: Do not expose your watch to intense magnetic fields such as loudspeakers or refrigerators and other electromagnetic appliances.
    Shocks: Whether thermal or other shocks, avoid them. In the event of violent shocks, please have your watch checked by an authorized service center.
    Crown: Depending on model, push or screw it in carefully to ensure that no water enters the mechanism.
    Cleaning: For metal bracelets and for all water-resistant cases use a toothbrush with soapy water and a soft cloth for drying.
    Chemical products: Avoid direct contact with solvents, detergents, perfumes, cosmetic products etc., since they may damage the bracelet, the case or the gaskets.
    Temperatures: Do not expose your watch to sudden temperature changes (exposure to sunlight followed by immersion in cold water) or extreme temperatures over 60C (140F) or under than 0C (32F).

    Dear customer,
    In the wake of the Covid-19 coronavirus pandemic, hygiene precautions need to be stepped up in everyday life.
    The same applies to your watch. Below you will find our tips, which can be followed alongside strict hygiene measures, such as washing your hands frequently.
    On parts made of metal, silicone, plastic, sapphire (the watch crystal or the back of specific watches):

  • Wipe with a lint-free wipe impregnated with a hydro-alcohol solution, usually based on methylated spirits (a solution containing over 70% alcohol).

  • Be sure to concentrate on the moving parts (e.g. bracelet links) and uneven areas.

  • Then leave it to dry, without wiping the watch. The wipe is disposable and must be thrown away after use.

  • For leather, rubber, cloth and plastic straps with decoration, as well as polymer watch crystals or case backs :
  • Wipe with a lint-free wipe soaked in water with a little soap added. Avoid using an alcohol solution, which could cause permanent damage to these materials.

  • Be sure to concentrate on the moving parts (e.g., bracelet links) and uneven areas.

  • Then leave it to dry, without wiping the watch. The wipe is disposable and must be thrown away after use.

  • These measures cannot entirely guarantee a level of disinfection that is capable of eradicating viruses and germs, especially on delicate materials that cannot be cleaned with an alcohol solution, such as leather. However, they will make a contribution to maintaining a hygienic environment.


    The high-quality stainless steel (316L) used by Tissot belongs to category 1.4404. Tissot watches are subject to rigorous quality tests which exceed European and international standards, particularly in relation to standard EN1811:2011 on the release of nickel. However, if you are allergic to nickel, we recommend you buy a watch which is made of titanium or gold or which is PVD coated. 

    The indication \T Swiss made T\" (usually printed on the dial face at six o'clock) means that the watch is Swiss and contains a certain quantity of tritium that emits less than 227 MBq (7.5mCi). It is important to specify that this radionuclide emits a radiation of low energy, perfectly confined by the watch case and glass. Under no circumstances will they threaten the health of the wearer. "

    Radium was abandoned by Tissot in the 1960s, followed by tritium in the 1990s.  No watches containing radium or tritium have been produced by Tissot since then. Tritium was replaced with a new luminescent material called Super-LumiNova, which is used in the manufacture of our dials and hands. Super-LumiNova is phosphorescent only and consequently has no radioactivity whatsoever. It takes its luminescence from daylight or any artificial source of light. The watch should therefore be exposed to bright light in order to ensure the luminescence of the dial and hands in the dark. The luminescence decreases with hours but it is restored as soon as the watch is exposed to bright light. 

    Titanium is a metallic element found in the earth's crust. The element occurs as a bright, lustrous metal or a silver-grey or dark-grey powder. Titanium is 50% lighter than steel and very corrosion-resistant. When exposed to air it forms a hard oxide film which resists corrosion and salt water.  Titanium is hypo-allergenic since it is nickel-free. 

    PVD stands for \Physical Vapour Deposition\". It is a process performed under vacuum which deposits microscopic particles on the products by ion bombing or sputtering, to form a protecting coating on their surface with a specific colour. Very thin layers (1 μm) of impurity-free components can be obtained which possess high levels of hardness and hypo-allergenic qualities. "

    Tactile watches

    The little spanner means that the watch has experienced an error and needs to be checked by a Tissot-certified watchmaker. A complete list of official service centres is available in the Find a Service Centre section.

    Yes, but to avoid a build-up of salt on the pusher, we recommend immediately having the rubber protector replaced by your nearest Tissot-certified service centre. A complete list of official service centres is available in the Find a Service Centre section.

    It is not possible to erase dive profiles. However, a Tissot-certified service centre can do it for you. A complete list of official service centres is available in the Find a Service Centre section.

    A scuba diver does not generally descend lower than 60m. Tissot guarantees the accuracy of the depth meter up to 59m. Beyond this limit, the diving mode is blocked to protect the diver and prevent the sensor from being damaged by excessive pressure. If this limit is exceeded, a small spanner icon appears in the LCD display. Please also be aware that below a depth of 30m, most insurance policies no longer cover you in the event of an accident.

    Before each dive, the Sea-Touch checks all the functions of the watch and the battery level.
    If one of the tests fails (e.g. the battery level is too low), the watch prevents activation of Dive mode, to protect the diver from an accident due to incorrect interpretation of data.

    These settings, which concern average temperatures and relative pressure in your geographical location, allow a more accurate calculation model to be used for the weather, altimeter and altitude-difference metre functions. The calculations are also adapted for the seasons.

    In rare cases, tactile watches may become out of sync. There are various reasons for this, particularly violent impacts or magnetic fields. The hands can be synchronised at any time by following the instructions contained in the user guide, available in the Warranty and user's manual section.

    The number of dives which can be stored is directly dependent on their average duration. On average, up to 99 dive profiles will be stored. Once this number is exceeded, the oldest will be replaced by the most recent.

    The precision of the depth meter is in line with European standard EN13319, which tests the reliability and effectiveness of diving products. The precision depends among other things on depth and weather conditions. Up to 3m: +80/-40cm. Beyond 3m: +80cm/-1.5m.

    Airline cabins are pressurised for safety reasons. Since the altimeter bases its data on the ambient pressure, the altitude displayed will not correspond to the pressure outside the plane.

    From its activation, the altitude-difference metre adds positive and negative altitude changes using an atmospheric pressure sensor inside the watch. It is rare for the wearer's route to ascend or descend at a constant rate. Small ascents or descents in the route are therefore added to the total theoretical change in altitude, potentially leading to significant discrepancies. So if the route begins at an altitude of 1200m and ends at 600m, it is highly likely that the route itself represents a cumulative descent of 800m.

    The Sea-Touch uses water pressure to indicate your depth. The watch measures absolute pressure (quantity of air in a specific location) at the surface and uses it as a reference to calculate subsequent variations in pressure.
    On Earth, a pressure difference of 1 hectopascal (hPA) corresponds to a change in altitude (increase or decrease) of around 10m. Under water, a difference of 1 hPA corresponds to an increase or decrease of around 1cm in depth. That represents 1000 times more pressure! Measuring air pressure is therefore totally different from measuring water pressure. That is why we use bar units to measure water pressure (1 bar = 10m). Pressure sensors present in most tactile watches do not have the same sensitivity as Sea-Touch sensors and so do not allow calculation of water depth.