Seiko 9R15 User Manual

English

※  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.

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.)

※  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.

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

※  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.

※  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.

While 

pressing the 

crown in, 

turn it in the 

direction 

indicated by 

the arrow.

Unlock the crown 

before operating it.

After operating 

the crown, lock 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.

Power reserve 

indicator

Winding state of 

the mainspring

Fully wound

Half wound

Unwound

Number of hours 

the watch can run

Approximately 72 

hours (3 days)

Approximately 36 

hours (1.5 days)

The watch either stops 

or is running down.

6

After operating 

the crown, lock it.

Unlock the crown 

before operating it.

Crown
locked

Crown
unlocked