Like any finely crafted mechanism, your Concord watch requires periodic maintenance to ensure optimal performance. Maintenance includes complete disassembly, cleaning, replacement of parts as needed, reassembly and lubrication of the movement. A maintenance interval of 3 to 5 years is recommended, in addition to any required battery replacement.
Never open the watch yourself. If your watch needs repair or adjustment, take or mail it directly to a Concord Authorized Service Center. To find the nearest Authorized Service Center, please click here.
All Concord watches have shock-resistant movements, individually tested to meet international standards.
Dust can enter a watch if the case, crystal or crown is not intact. A small particle is enough to stop the movement. Have your watch repaired promptly if the crystal becomes loose, chipped or cracked, or if there is damage to the case or crown.
The exposure of a timepiece to strong magnetic fields will affect its time-keeping, and may cause it to stop. A quartz watch should resume working with its original accuracy when removed from the magnetic field; a mechanical timepiece may require demagnetization before it will operate again.
All Concord watches are tested to meet international standards for water resistance. Most styles are resistant to 30 meters (3 ATM/3 bar/99 feet); certain models are water resistant to even greater pressures/depths, as marked on the dial or case back.
Caution: If the water resistance limit is not marked on your watch, do not subject it to a pressure/depth greater than 30 meters (3 ATM/3 bar/99 feet), or your watch could be damaged and your warranty will be voided.
Important: Do no operate the watch crown, push-buttons on a chronograph model, or any other pushers/buttons when the timepiece is wet or under water.
Note: The Concord Watch Company will not be responsible for any damage caused by or related to leakage originating from improper handling or damage to the case, crown, gaskets or crystal.
To maintain water resistance, yearly maintenance is required. The gaskets and crown which seal the case are subject to wear and deterioration under normal use. These parts should be inspected and replaced as needed each time the watch is opened for service, including battery changes. Your Authorized Concord Service Center will automatically retest your watch for water resistance as a routine step in all service orders.
Other Precautions: If your watch is equipped with a screw-down crown or pushers, be sure to screw it/them back down in the case after every operation.
Water resistance applies only to the watch case; some watch straps should not be worn under water or subjected to wet conditions. Please see Strap Care.
Avoid exposing your watch to sudden and excessive temperature variations.
Do not drop your watch or bang it against a hard surface.
Water resistance must be rechecked after every violent shock. Clean your watch regularly by wiping it with a soft cloth dampened with fresh water, especially after exposure to seawater.
While the life span of a watch strap depends on your care and wearing habits, as well as the climate in which you live, proper care will extend its life.
Leather straps should be kept dry. Exposure to water may cause a leather watch strap to become brittle and eventually break. To preserve the finish of the leather, contact with perfumes should be avoided. Following exposure to chlorinated or salt water, gently damp wipe your leather strap with fresh water, and air dry.
To help preserve the natural elasticity and quality of a Series 800 ThermoResin or XTremeResin strap, rinse using a soft cloth soaked in fresh water following exposure to salt water, chemicals or abrasive substances.
Use warm water and a neutral pH soap applied to a soft cloth to gently clean a white Series 800 ThermoResin strap; then wipe with a second clean cloth dipped in warm water, or rinse carefully under warm running water. Contact with acetone and ethyl alcohol should be avoided.
Note: Concord watch straps are not covered by the Concord watch warranty.
A Concord quartz timepiece has a 1.55 Volt silver-oxide battery that is specifically designed for watches. It will last approximately 18-36 months under normal use.
Note: Frequent use of special functions, like the stopwatch timer on chronograph models, may shorten battery life.
End-of-life feature: The seconds hand on many models will start to move haltingly in 4-second increments when the battery is almost exhausted, signaling the need to have it replaced.
Battery Replacement: It is important to use only the replacement battery recommended by Concord.
Take or send your watch to an Authorized Service Center to have the battery changed—your old battery will be disposed of/recycled properly. Do not attempt to change the battery yourself.