Seiko SRPH77 Owner Manual - Page 6

1 Screw down crown HOW TO USE The screw down crown features a mechanism that can securely lock the crown when it is not being operated in order to prevent any operational errors and to improve its water resistant performance. • It is necessary to unlock the screw down crown before operating it. • Once you have finished operating the crown, make sure to relock it. [To unlock the crown] Turn the crown counterclockwise to unscrew it. Now the crown can be operated. Unlock the crown before operating it. Crown locked [To lock the crown] Turn the crown clockwise while gently pressing it in toward the watch body until it stops. Crown unlocked After operating the crown, lock it. Unscrew Rotate while pressing the crown in. * When locking the crown, turn it slowly with care, ensuring that the screw is properly engaged. Be careful not to push it in forcefully, as doing so may damage the screw hole in the case. EN 17 1 * If the watch is used without being wound up fully, gain or loss of time may result. To avoid this, wear the watch for more than 10 hours a day. If the watch is used without being worn on the wrist, be sure to wind it up fully every day at a fixed time. HOW TO USE * If you use a watch that has stopped with the mainspring unwound, winding the mainspring with the crown will not start the watch immediately. That is because the mainspring torque or force is low at the beginning of its winding due to the characteristics of mechanical watches. The seconds hand will start to move when a certain degree of torque is reached after the mainspring has been wound up. However, swinging the watch from side to side to forcibly turn the balance can start the watch sooner. How to wind the mainspring 1 HOW TO USE • This is an automatic mechanical watch with a manual winding mechanism. • When the watch is worn on the wrist, the mainspring is wound automatically through normal wrist movement. The watch can also be wound up by turning the crown. • To start the watch after it stops completely, wind it up either by turning the crown or swinging it from side to side until the seconds hand starts moving. Then, set the time and date before putting the watch on the wrist. To wind up the watch, turn the crown clockwise slowly. The watch cannot be wound by turning the crown counterclockwise. In this way, the watch can be wound up fully. Furthermore, turning the crown further will not break the spring. * For the watch with screw down crown, please unlock the crown before operating it and be sure to lock the crown after operating it. • Once the watch is wound up fully, it operates for about 41 hours. EN 18 How to set the time and date (4R35) 1 HOW TO USE The watch is provided with a date function and is so designed that the date changes once every 24 hours. The date changes around 12 o'clock midnight. If AM/PM is not properly set, the date will change at 12 o'clock noon. * To adjust the date only on a day such as the next day after the completion of a month that has less than 31 days (February, April, June, September and November), please refer to "Date adjustment at the end of the month" → P.23. b CAUTION Do not set the date between 9:00 p.m. and 1:00 a.m. Amending the date during this time period may cause problems such as the date failing to change the next day. EN 19 EN 20