Seiko 9R15 Manual - Page 10

■HOW TO USE Crown There are two types of crowns, a normal crown and a screw-lock crown. While pressing the crown in, turn it in the direction indicated by the arrow. The crown turns. The crown does not turn. ※ It cannot be turned any further. ※ By locking the crown by screw, a screw-lock type crown can prevent malfunction and increase water resistance. ※ Be careful not to screw the crown in by force as it may damage the slots of the crown. Normal crown Pull out the crown and operate it. Screw-lock type crown Unlock the crown before operating it. Unscrew After operating the crown, lock it. While pressing the crown Screw Screw-lock type crown The screw-lock type crown features a mechanism that can securely lock the crown when they are not being operated in order to prevent any operational errors and to improve its water resistant property ○ It is necessary to unlock the screw-lock type crown before operating it. ○ Once you have finished operating the crown, make sure to relock it. 【To unlock the crown】 Turn the crown counterclockwise (downward) to unscrew it. Now the crown can be operated. 【To lock the crown】 Turn the crown clockwise (upward) while gently pressing it in toward the watch body until it stops. Unlock the crown before operating it. Unscrew Crown locked Crown unlocked After operating the crown, lock it. While pressing the crown in Screw ※ 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. 16 English Power reserve indicator The power reserve indicator lets you know the winding state of the mainspring. Before removing the watch from your wrist, observe the power reserve indicator to check if the watch has stored enough power to keep running until the next time you wear it. If necessary, wind the mainspring. (To prevent the watch from stopping, wind the mainspring to store the excess power that will allow the watch to run for extra time.)  1PXFS
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JOEJDBUPS ※ The continuous operating time of the watch may vary depending on the condition of use, such as the number of hours you wear the watch or the extent of your movement while wearing it. ※ In a case where you wear the watch for a short period of time, observe the power reserve indicator to check the level of the remaining power. If necessary, manually wind the mainspring. How to read the power reserve indicator Power reserve indicator Winding state of the mainspring Fully wound Number of hours Approximately 72 the watch can run hours (3 days) Half wound Unwound Approximately 36 The watch either stops hours (1.5 days) or is running down. ※ The watch employs a device to prevent overwinding of the mainspring. Once the mainspring is fully wound, the mainspring slips inside, disengaging the winding mechanism. When this happens, you can still turn the crown without damaging the watch, however, please refrain from excessive operation of the mainspring. 17