Seiko SRPH77 Owner Manual - Page 12

3 Open the two-piece foldover portion of the Diver Extender in 2 the direction of the arrow. • Some force is required to open the foldover portion, and it will click when it is opened. TO PRESERVE THE QUALITY OF YOUR WATCH 4 Slide the upper cover of the Diver Extender in the direction of the arrow, and then, pull it up to extend the two-piece foldover portion to the full extent. 5 Place the watch on your wrist, and close the clasp (5-1) first and then, the flap (5-2). * To fold up the Diver Extender, reverse the procedure above. When the two-piece folder portion of the Diver Extender is folded up completely, it also clicks in the same manner as when it is opened. EN 41 Two-piece foldover portion of the Diver Extender Upper cover of the Diver Extender Flap (5-2) Clasp (5-1) TO PRESERVE THE QUALITY OF YOUR WATCH ● Inspection and adjustment by disassembly and cleaning (Overhaul) • Periodic inspection and adjustment by disassembly and cleaning (overhaul) is recommended 2 approximately once every 2 to 3 years in order to maintain optimal performance of the watch for a long time. • The power transmission gear of the movement of this watch constantly receives force. To ensure that this mechanism works properly all the time, washing parts, changing oil, adjusting accuracy, checking functions and replacing consumable parts on a regular basis are important. The first overhaul after the purchase of your watch is particularly important for preserving long-time use of your watch. According to use conditions, the oil retaining condition of your watch mechanical parts may deteriorate, abrasion of the parts due to contamination of oil may advance or delay the time significantly, or the watch itself may stop. As the parts such as gasket may deteriorate, water resistant performance may be impaired due to intrusion of perspiration and moisture. Inspection and adjustment by disassembly and cleaning (overhaul) should be performed by the retailer from whom the watch was purchased, and who specifies "SEIKO GENUINE PARTS." At this time, also request replacement of the gasket and the spring bar. • When your watch is inspected and adjusted by disassembly and cleaning (overhauled), the movement of your watch may be replaced. b CAUTION Depending on the environment where a diver's watch is used, its inner parts or movement as well as its case or band may be affected. We recommend that you have your watch overhauled regularly once every 2 or 3 years. EN 43 TO PRESERVE THE QUALITY OF YOUR WATCH After sales service ● Notes on guarantee and repair 2 • Contact the retailer from whom the watch was purchased or SEIKO CUSTOMER SERVICE CENTER for repair or overhaul. • Within the guarantee period, present the certificate of guarantee to receive repair services. • Guarantee coverage is provided in the certificate of guarantee. Read carefully and retain it. • For repair services after the guarantee period has expired, if the functions of the watch can be restored by repair work, we will undertake repair services upon request and payment. ● Replacement with functional parts • Please keep in mind that if original parts are not available, they may be replaced with substitutes whose outward appearance may differ from the originals. EN 42 Accuracy of mechanical watches TO PRESERVE THE QUALITY OF YOUR WATCH ○ The accuracy of mechanical watches is indicated by the "daily rate." 2 ○ 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 44