Jack Mason Miyota OS25 User manual

SETTING THE TIME
SETTING THE DATE
1. Pull the crown out to position (iii).
Turn the crown to set hour and minute hands.
When the crown is pushed back to position (i), second hand begins to run.
2.
1. Pull the crown out to position (ii).
Turn the crown counter-clockwise to set the date.
* If the date is set between the hours of around 9:00 PM and 1:00 AM, the date
may not change the following day.
2.
3.
After the date has been set, push the crown back to position (i).3.
*Date position may be located at different positions depending on model.
*24 Hr Hand is day/night indicator when setting time and date.
Miyota Caliber No. 0S25 Chronograph Function
Crown
Chronograph
Chronograph
Date
Small
Second Hand/
Minute Hand
24 Hr Hand
Hour Hand
Second Hand
Minute Hand
1/20 Second
Counter

Miyota Caliber No. 0S25 Chronograph Function
Pusher A
Pusher B
1. To start: Press pusher A.
To stop: Press pusher A once more.2.
To reset: Press pusher B to reset the chronograph second hand, chronograph
minute hand, and chronograph 1/20 second hand to the zero position.
3.
Press pusher B once more to return the second hand to normal function.
This chronograph will measure and display time in 1/20 second units up to a maximum
of 59 minutes 59 seconds, and 950 milliseconds. The chronograph second hand moves
continuously for 59 minutes 59 seconds after starting. The 1/20 second hand will stop
moving after 30 seconds, but continues count internally.
USING THE CHRONOGRAPH FUNCTION

Miyota Caliber No. 0S25 Chronograph Function
CHRONOGRAPH RESET
This procedure should be performed when the chronograph second hand does
not return to the zero position after the chronograph has been reset, as well as
after the battery has been replaced.
1. Pull the crown out to position (iii).
Once the hand has been zeroed, return the crown to position (i).3.
Press Pusher A to set the chronograph second hand to the zero (12:00)
position. The chronograph hand will advance rapidly by pressing and
holding Pusher A.
2.
Pusher A