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Frequently Asked Questions


Every Longines timepiece is covered under a limited 2-year warranty. The warranty covers material and manufacturing defects existing at the time of delivery until twenty-four months after the date of purchase. Watch out for warranties offered from unauthorized sites, as transactions with these sites are at the buyers risk. Warranties are only honored with a valid warranty certificate from an authorized dealer.

Click here for more detailed warranty information.


1) How often do you recommend having a maintenance service carried out on a Longines watch?

We would like to draw your attention to the fact that a watch used daily is running 24 hours a day, 7 days a week non-stop.
The frequency of the maintenance service depends on the type of watch, the climate and the care taken by the watch wearer.
In general, it is necessary to have your watch controlled and serviced at least once every 4 - 5 years, just like any other precise mechanical device. This guarantees the reliability and rate precision of your watch.

2) Which operations are included in a complete maintenance service?

The following operations should be included in the price of a complete maintenance service:

  • Complete dismantling of the movement, cleaning, oiling, reassembling, regulating and the checking of functions;
  • Repair or replacement of movement components that are either worn or faulty;
  • Replacement of the following parts: glass, crown, push-pieces, seals and battery if a quartz calibre (parts included in the price of the service, with the exception of shaped mineral glasses and sapphire crystals);
  • Restoration of the water-resistance (if a water-resistant model);
  • Refurbishing of the case or bracelet (two-tone, gold-plated and PVD-coated cases and bracelets, cleaning only);

3) Which operations are included in a partial maintenance service?

The following operations should be included in the price of a partial maintenance service:

  • During each partial basic repair, Longines undertakes to check the regulation of the movement and replace the glass (if necessary), the pipe, the crown, the push-pieces, the seals and the battery in the case of a quartz movement (these parts are included in the price, with the exception of shaped mineral glasses, sapphire crystals, and restoration services carried out on the dial, case and bracelet. Parts made out of noble metals will be invoiced separately);
  • Restoration of the water-resistance (if a water-resistant model) and cleaning of the case and bracelet;

Any repair that necessitates the replacement of a part, or any service mentioned in point 7 automatically involves a partial basic service.


1) For how many years is the availability of Longines spare parts guaranteed?

Longines guarantees the availability of its spare parts during a minimum of 15 years from the date of the production stop of the watch model concerned.
If this period has elapsed and the spare parts are no longer available, we kindly suggest that you send your watch via a Longines authorized service centre to the Longines head office in Switzerland for a repair estimation.
In the large majority of cases, we are able to find a solution for repairing your watch properly even many years after the minimal duration of 15 years has elapsed.

2) Where can I find spare parts for my Longines watch?

If you need spare parts for your Longines watch, we recommend that you contact the nearest authorized Longines service centre in your country. You will find its address in your guarantee booklet or on our website in the Customer Service section.


1) Which recommendations should I follow to make sure that my Longines watch continues to function for many years to come?

Automatic watches: the automatic winding device of an automatic watch keeps the watch wound while it is being worn. Off the wrist, it will keep functioning for at least 38 hours. The automatic winding mechanism requires up to 10 hours on the wrist (depending on the model and on the activities of the wearer) to wind the watch completely. In order to guarantee the rate precision and a sufficient power reserve from the very first moment you wear the watch, we recommend that you wind the watch manually by turning the winding crown about 20 times clockwise. Repeat the same operation if your watch has stopped completely.
If your watch has stopped and you simply wear it without winding it for a few hours, it will never accumulate its full power reserve and will thus stop again a few hours after you remove it from your wrist.
For your information, all Longines automatic movements have a safety system to prevent the over-winding of the mainspring. This means that you cannot damage the watch through winding.
Due to technical reasons, a non-mechanical movement does not have this safety system. With such movements, you will feel a mechanical resistance when you have wound the watch completely. These movements can thus be damaged by over-winding.
Quartz watches: quartz movements are powered by a battery. Standard batteries will last approx.12 to 18 months, before a sudden loss of energy causes the watch to stop. Some watches are fitted with a battery end-of-life (E.O.L.) indicator: when the battery is about to run down, the seconds hand starts to jump every four seconds. When the E.O.L indicator is active, the battery must be replaced immediately. A powerless battery inside a watch might leak and damage its movement.
Guarantee: always have your watch checked, serviced and repaired by an authorized Longines agent to maintain your guarantee and ensure that your watch is serviced according to Longines's quality standards.
Magnetic fields: all Longines mechanical watches can resist the usual magnetic fields found in regular environments.
However, it is possible for a watch to become magnetized if it is in direct contact with a very strong magnetic field (large speakers, a large electromotor, fridges, computers, mobile phone holders with magnetic clips, etc.).
In such circumstances, our Longines authorized service centres are able to demagnetize the watch easily without even opening the watch case.
Crown: we recommend that you screw the crown back again carefully to avoid water entering the movement.
Shocks: we recommend that you avoid every kind of shock. All of our watches are manufactured according to NIHS standards. This means that your watch should resist and continue to function after suffering a fall from one metre onto solid wood. Furthermore, it is important to note that a hard knock might cause the watch to lose its water-resistance without you realising it.
Seawater: we recommend that you wash your watch with water after every dip in the sea
Up to which depths are Longines watches water-resistant and when should I check the water-resistance?
All of our watches are crafted according to the norms of the Swiss watchmaking industry (NIHS).
All modern Longines watches are water-resistant to 30, 50, 100 or 300 meters, depending on the model of watch.
However, a hard knock might cause the watch to lose its water-resistance without you realizing it. Therefore, if you plan to use your watch underwater, it is essential to have the water-resistance checked at least every 12 months. It is recommended to have the water-resistance checked and the seals replaced by an authorized repair centre every time the battery is replaced. Furthermore, we insist on the fact that, without any supplementary indication of pressure, our watches should not be used for scuba-diving.

2) How do I set the time and date on my Longines watch?

Please click here to refer to the instructions for use.

3) How do I set the moon phase on my Longines watch?

Please click here to refer to the instructions for use.


1) What can I do in the case of an allergy ?

We are aware of the problems of allergies and take them into consideration when creating new products.
We are working in collaboration with a specialized service, which informs us of any evolutions in this domain. New allergies appear in the world every day and medical knowledge of this phenomenon is constantly evolving. While we adapt our products to this evolution, we cannot totally exclude the possibility that allergies which were unknown to medical circles when we manufactured a watch will occur. This is true for all manufacturers. Consequently, any information that you can give us is extremely precious, as it enables us to develop the optimum security of our products.
All of our new straps are considered to be hypoallergenic. In case of any allergic reactions, please contact the nearest Longines service centre in order to find a solution.
Metal: all of our modern metal watches and bracelets are made with high quality stainless steel, known as 316L. In order to obtain a very high resistance to corrosion, their nickel content is quite high (c. 14%) . However, they are very safe with regard to nickel allergies, as we must ensure that the nickel is not released into the skin. Medical studies have led the European Community to fix this limit of release at 0.5 µG per week and per square centimetre that is in contact with the skin. The steel that we use has a release of approx. 0.05 µG, i.e. ten times less than this limit, and our cases and bracelets are therefore totally safe with regard to allergies. The same steel is also used in the medical industry.

2) What do I have to consider when purchasing a watch winder for my Longines watch?

Longines does not provide watch winders.
There are several suppliers who sell such devices, but we cannot provide any particular recommendations.
Please consider the advice mentioned below when purchasing a watch winder for a Longines watch.
There are three main types of watch winders available: 

  1. Functional: these watch winders generally have a simple design.
  2. Elegant: these watch winders are more than purely functional. In these winders, watches are nicely displayed and protected from dust.
  3. Extravagant: these watch winders are luxury watch exhibition and storage devices. A constant temperature can even be maintained inside the watch winder.

For all winders, we advise the following:

Do not let your watch be wound continually for over 24 hours. Watch winders with a sleep mode exist, which stop after 1-6 hours of winding and then restart winding after 5-10 hours ideally. This option prevents excessive use of the winding mechanism.
The clockwise or anti-clockwise rotation of the watch winder must be taken into consideration for some of our automatic watches. Most of them must be wound clockwise (dial towards the face).
Let your watch be quietly wound. 3-8 rotations per minute is sufficient.
Advice for purchasing a watch winder:

  1.  Reversible winding direction option
  2.  Adjustable winding speed option
  3.  Sleep mode option if you plan to leave your watch on the watch winder for more than 24 hours.

Remember that a poor watch winder is worse than having no winder at all.