Seiko SRPH77 Owner Manual - Page 13

TO PRESERVE THE QUALITY OF YOUR WATCH ○ Mainspring wound condition and accuracy In order to improve accuracy, it is important to regularly supply energy to the balance that controls the speed 2 of the gears. The driving force of the mainspring that powers mechanical watches varies between when fully wound and immediately before it is unwound. As the mainspring unwinds, the force weakens. Relatively steady accuracy can be obtained by wearing the watch on the wrist frequently for the self-winding type and winding up the mainspring fully everyday at a fixed time to move it regularly for the wind-up mechanical type. ○ Effect of magnetism When affected by a strong magnetism from outside, the mechanical watch may lose/gain time. The parts of the watch may become magnetized depending on the extent of the effect. In such a case, consult the retailer from whom the watch was purchased since the watch requires repair including demagnetizing. EN 45 Troubles Possible causes Solutions 2 The date changes at 12 o'clock noon. Blur in the display AM/PM is not properly set. A small amount of water has got inside the Advance the hands by 12 hours. Consult the retailer from whom the watch was persists. watch due to deterioration of the gasket, etc. purchased. * For a solution to a problem other than listed above, contact the retailer from whom the watch was purchased. Troubleshooting Troubles Possible causes Solutions Wind up the watch as per "How to wind the 2 TO PRESERVE THE QUALITY OF YOUR WATCH The watch stops operating. The mainspring has not been wound. mainspring" → (P.18), and set the time. If the watch still does not operate, consult the retailer from whom the watch was purchased. Return the watch to a normal temperature so that it works accurately as usual, and then The watch has been left in extremely high or reset the time. The watch has been adjusted low temperatures for a long time. so that it works accurately when it is worn on your wrist under a normal temperature range between 5°C and 35°C. The watch gains/loses time. The watch has been left close to an object with a strong magnetic field. Accuracy cannot be recovered. Restoring the original accuracy requires demagnetization (repair). Consult the retailer from whom the watch was purchased. You drop the watch, hit it against a hard If accuracy does not return after setting the surface, or wear it while playing active sports. time, consult the retailer from whom the watch The watch is exposed to strong vibrations. was purchased. The watch has not been overhauled for more Consult the retailer from whom the watch was than 3 years. purchased. EN 46 Specifications Cal. 4R35 4R36 2 1. Features 3 hands (hour, minute, second), date 3 hands (hour, minute, second), display date/day of the week display 2. Vibrations per hour 21,600 vibrations/hour (6 vibrations/sec) 3. Loss/gain (daily rate) +45 to -35 seconds at normal temperature range Only if worn on the wrist in a temperature range of 5°C to 35°C 4. Driving system Automatic winding type with manual winding mechanism 5. Duration Approx. 41 hours 6. Jewels 23 jewels 24 jewels * The accuracy above is factory-adjusted. * Due to the characteristics of mechanical watches, any actual daily rate may not fall within the range of time accuracy specified above dependent on the conditions of use, such as the length of time during which the watch is worn on the wrist, temperature, arm movement, and whether the mainspring is wound up fully or not, etc. TO PRESERVE THE QUALITY OF YOUR WATCH TO PRESERVE THE QUALITY OF YOUR WATCH EN 47 EN 48