claude bernard watches

International Claude Bernard Warranty

Congratulations on having chosen a Claude Bernard timepiece. To ensure your timepiece operates perfectly, we recommend that you follow the advice given in these instructions.

The warranty of your Claude Bernard watch is valid for a period of 24 months effective from the date of purchase and under the terms and conditions of the present warranty.

The international Claude Bernard warranty covers material and manufacturing defects existing at the time of delivery of the purchased Claude Bernard watch. The warranty only comes into force if the warranty certificate is dated, fully and correctly completed and stamped by an official Claude Bernard retailer.

During the warranty period and by presenting the valid warranty certificate, you will have the right to have any defect repaired free of charge. In the event that repairs are unable to restore the normal conditions of use of your Claude Bernard watch, Claude Bernard guarantees its replacement by a Claude Bernard watch of identical or similar characteristics.


The warranty for the replacement watch ends 24 months after the date of purchase of the replaced watch.

The manufacturer’s warranty does not cover:y

  • Is independent of any warranty that may be provided by the seller, for which he carries sole responsibility
  • Does neither affect the purchaser’s rights against the seller nor any other mandatory statutory rights the purchaser may have against the seller.


If your watch needs attention, rely on an official Claude Bernard dealer: he can guarantee service according to Claude Bernard’ standards.

The manufacturer’s warranty does not cover:y

The battery

The glass

The leather strap

Normal wear, and tear and ageing (for example scratched crystal, alteration of the colour and/or material of non metallic straps and chains, such as leather, rubber)

Any damage on any part of the watch resulting from abnormal/abusive use, lack of care, negligence, accidents (knocks dents, crushing, broken crystal, etc.), incorrect use of the watch and non-observance of the operating instructions provided by Claude Bernard

The Claude Bernard watch handled by non-authorized persons (for example for battery replacement, service or repair) or which has been altered in its original condition beyond Claude Bernard’ control

Claude Bernard watches bought from non authorized retailers since Claude Bernard is not able to check if the watches were handled and stocked correctly

Any further claim against Claude Bernard, for example for damages additional to the above described warranty is expressly excluded, except mandatory statutory rights the purchaser may have against the manufacturer.

Special recommendations

To avoid any errors, do not perform the date setting between 22h00 and 3h00 when the date mechanism is in action. Be careful not to confuse noon and midnight.

Never operate pushers or crown when your timepiece is under water or if it is wet and ensure that the crown and pushers are properly pushed back or screwed down after each use.

We recommend that you have the water resistance of your timepiece checked at an authorized Claude Bernard center every 24 months or whenever the timepiece case is opened.

Maintenance recommendations

Magnetic fields: 

avoid placing your watch on loudspeakers, or refrigerators, since they generate powerful magnetic fields.

Chemical products:

avoid direct contact with solvents, detergents, perfumes, cosmetics etc., since they may damage the bracelet, case or gaskets.


for metal bracelets and water-resistant cases, use a toothbrush with soapy water to clean and a soft cloth for drying.


avoid thermal and violent shocks.

What are the service intervals?

Every 24 months

we advise you to do maintenance service (water resistance, movement accuracy test)

Every 5 years

we advise you to do a complete maintenance service (complete movement revision, water resistance, accuracy and functionality complete revision)

Who should I contact for a maintenance service or battery replacement?

We recommend that you contact an authorized Claude Bernard retailer, as they are the only certified specialists equipped with the tools and apparatus required carrying out the work and the necessary checks in a professional manner. Furthermore, only these certified specialists can guarantee that their work is carried out in accordance with Claude Bernard’ strict quality standards. Make sure that right after each battery change the watch has been water-resistant tested.

Environmental protection

Collection and treatment of end of life Quartz watches*

This product should not be disposed of with household waste. It has to be returned to a local authorized collection system. By following this procedure you will contribute to the protection of the environment and human health. The recycling of the materials will help to conserve natural resources.

*valid in EU member states and in any countries with corresponding legislation.


Mechanical watches

The mechanical Claude Bernard watch with an automatic movement does not need to be wound by hand. The motion of your wrist makes the rotor (oscillating weight or mass) turn, thereby winding up the mainspring of the watch movement. The everyday activity of life is sufficient in itself to wind up an automatic Claude Bernard watch and it will run continually, even if it is removed at night. However, if not worn for approximately 40 hours, it will stop. To make the watch work again, turn the crown clockwise about 20 times. Now set the time and if possible the date, etc.


Mechanical watches accuracy

Depending on the movement, the daily tolerance of a mechanical watch can be of 30 seconds. If you notice a bigger tolerance rate, you can have your watch adjusted at a service center in your country, free of charge within the guarantee period.


Tachymeter scale

Some Claude Bernard Chronograph watches have a tachymeter scale. With this scale it is possible to measure the speed. The distance is 1 km. To measure the elapsed time press the start/stop button when the vehicle (power-boat) passes the starting and the final point or target. The figure shown by the hand on the tachymeter scale indicates the average speed in kilometers. If for instance a car covers a 1 km distance in 30 seconds, you can consider it to an average speed of 120 km per hour.


PVD (Physical Vapour Deposition)

the modern technologies and intended for fields of application such as the aeronautics, the automobile, the surgery, the electronics.


Stainless steel 316L

The stainless steel used for Claude Bernard cases and bracelets appears among the best alloys at the moment (316L. It is obtained by a special cast iron which guarantees an extreme robustness and excellent antimagnetic properties. Its low content in carbon makes it particularly resistant to the corrosion.

Water resistance

All Claude Bernard timepieces are water-resistant from 30 to 220 meters. Check the details on the back of your Claude Bernard timepiece and read the following instruction carefully.


Water resistant to 30 meters (100 feet / 3ATM). Will withstand rain or splashes of water and accidental immersion, but should not be worn when showering, swimming or diving.

Water resistant to 50 meters (165 feet / 5 ATM). Suitable for showering or swimming in shallow waters.

Water resistant to 100 meters (330 feet / 10 ATM). Suitable for swimming or snorkeling.

Water resistant to 220 meters (660 feet / 22 ATM). Suitable for swimming or snorkeling.


The water resistance of your timepiece cannot be guaranteed indefinitely, considering that joints may age, crowns or pushers may sustain knocks and climate or temperature may vary. We therefore recommend that you have the water resistance of your timepiece checked every 2 years or whenever the timepiece case is opened.


Leather straps

Original Claude Bernard leather straps are clearly marked on the buckle and on the reverse side. Claude Bernard uses a large variety of calfskin leather straps with imprinted patterns of different animals. Leather straps should not be used by individuals with strong perspiration or by those who stay for long periods in a humid climate. Leather straps are not covered by the international Claude Bernard warranty.

Screw-down crown

Screw down the crown carefully to prevent water from penetrating the mechanism.