Seiko 8R39 Manual - Page 11

English TO PRESERVE THE QUALITY OF YOUR WATCH Repair of divers watches requires special expertise and equipment. If you find that your diver's watch is malfunctioning, do not attempt to repair it but immediately send it to SEIKO CUSTOMER SERVICE CENTER. n TEMPERATURES The key components in mechanical watches are made of metals, which expand or contract depending on temperatures due to metal properties. This exerts an effect on the accuracy of the watches. Mechanical watches tend to loss time at high temperatures while they tend to gain time at low temperatures. n MAGNETISM n CHEMICALS n PERIODIC CHECK NS Your watch will be adversely affected by strong magnetism. Keep it away from close contact with magnetic objects. 20 2 - 3 Years Be careful not to expose the watch to solvents, mercury, cosmetic spray, detergents, adhesives or paints. Otherwise, the case, bracelet, etc. may become discolored, deteriorated or damaged. It is recommended that the watch be checked once every 2 to 3 years by an AUTHORIZED S E I K O D E A L E R o r S E R­V I C E CENTER to ensure that the case, crown, gasket and crystal seal remain intact. English n CARE OF CASE AND BRACELET n SHOCKS & VIBRATION n PRECAUTION REGARDING CASE BACK PROTECTIVE FILM To prevent possible rusting of the case and bracelet, wipe them periodically with a soft dry cloth. Be careful not to drop your watch or hit it against hard surfaces. If your watch has a protective film and/or a sticker on the case back, peel them off before using your watch. 21