Seiko SSK001 Owner Manual - Page 14

TO PRESERVE THE QUALITY OF YOUR WATCH Accuracy of mechanical watches 2 ○ The accuracy of mechanical watches is indicated by the "daily rate." ○ The accuracy of mechanical watches may not fall within the specified range of time accuracy because loss/gain changes according to the position of the watch, which is dependent on the conditions of use, such as the length of time during which the watch is worn on the wrist, arm movement, and whether the mainspring is wound up fully or not, etc. ○ The loss/gain of mechanical watches is not measured by a daily rate, but by daily rates of one week or so. ○ Accuracy variation according to temperature The parts that compose the accuracy of mechanical watches are made of metals. It is well known that metals expand or contract depending on temperatures due to metal properties. This exerts an effect on the accuracy of the watches. Mechanical watches tend to lose time at high temperatures while they tend to gain time at low temperatures. EN 49 Troubleshooting 2 Troubles Possible causes Solutions Wind up the watch as per "How to wind the TO PRESERVE THE QUALITY OF YOUR WATCH The watch stops operating. The mainspring has not been wound. mainspring" → (P.11), 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. Correct this condition by moving and keeping The watch temporarily gains/loses time. The watch has been left close to an object with a strong magnetic field. the watch away from the magnetic source, and reset the time. If this action does not correct the condition, contact 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 51 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 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. 2 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 temporarily. 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 50 Troubles Possible causes Solutions 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 2 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. TO PRESERVE THE QUALITY OF YOUR WATCH EN 52