Seiko SFJ001 Owner Manual - Page 9

TO PRESERVE THE QUALITY OF YOUR WATCH TO PRESERVE THE QUALITY OF YOUR WATCH Power Source The battery used in this watch is a special secondary battery, which is different from ordinary batteries. Unlike an ordinary silver oxide battery, the secondary battery does not require periodic replacement. The capacity or charging efficiency may gradually lower due to long-term use or operating environment. In addition, long-term use may shorten the charge duration due to wear, contamination, lubricant 5 deterioration of mechanical parts, etc. Request repair when the performance lowers. b WARNING ■ Notes on replacing the secondary battery • Do not remove the secondary battery from the watch. Replacement of the secondary battery requires professional knowledge and skill. Please ask the retailer from whom the watch was purchased for replacement of the secondary battery. • Installation of an ordinary silver oxide battery can generate heat that can cause bursting and ignition. EN 28 Daily care ● The watch requires good daily care • Do not wash the watch when its crown is in the extended position. • Wipe away moisture, sweat or dirt with a soft cloth. • After soaking the watch in seawater, be sure to wash the watch in clean pure water and wipe it dry carefully. Do not pour running water directly from a faucet onto the watch. Put some water into a bowl first, and then soak the watch in the water to wash it. 5 * If your watch is rated as "Non-water resistant" or "water resistant for daily use," please do not wash the watch. "Performance and type" → P.31 "Water resistant performance" → P.33 ● Turn the crown from time to time • In order to prevent corrosion of the crown, turn the crown from time to time. • The same practice should be applied to a screw down crown. "Crown" → P.10 ● Press the button once in a while • Press the button once in a while to prevent corrosion of the button. EN 30 * Overcharge prevention function When the secondary battery is fully charged, the overcharge prevention function is automatically activated to avoid further charging. There is no need to worry about damage caused by overcharging no matter how much the secondary battery is charged in excess of the "time required for fully charging the watch." * For the required time to fully charge the battery, see "Guide to charging times" → P.26. b WARNING ■ Notes on charging the watch • When charging the watch, do not place the watch in close proximity to an intense light 5 source such as lighting equipment for photography, spotlights or incandescent lights, as the watch may be excessively heated resulting in damage to its internal parts. • When charging the watch by exposure to direct sunlight, avoid places that easily reach high temperatures, such as a car dashboard. • Always keep the watch temperature under 60°C. EN 29 Performance and type The case back shows the caliber and performance of your watch Water resistant performance JAPAN WATER RESIS MADE IN SS STEEL 8A50-0000 Magnetic resistant performance 5 Case Number 000000 STAINLE • Water resistant performance Please refer to P.33. • Case Number The number to identify the type of your watch. • Magnetic resistant performance Please refer to P.34 and P.35. * The above illustration is provided as an example, therefore it may not be exactly the same as your watch. EN 31 TO PRESERVE THE QUALITY OF YOUR WATCH TANT 10 BAR 8A50-000 0 TO PRESERVE THE QUALITY OF YOUR WATCH