Operation Manual

English | Instruction Miyota OS10/OS20 „Chronograph“ „Chronograph“ Instruction Miyota OS10/OS20 | English

Setting the time: Pull the crown out to the 2nd position and turn the crown to set

hour and minute hands. When the crown is pushed back to the normal position, small

2nd hand begins to run.

Setting the date: Pull the crown out to the 1st position and 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 on the following day. After the date has been set, push the

crown back to the normal position.

Using the Chronograph: This chronograph is able to measure and display time in

1/1 2nd united up to maxinum of 11 hours 59 minutes 59 2nds. The chronograph 2nd

hand keeps continuously for 11 hours 59 minutes 59 2nds after starting. Measuring time

with the chronograph. The chronograph can be started and stopped each time button „A“

is pressed. Pressing button „B“ resets the chronograph and the chronograph 2nd hand,

chronograph minute hand, and chronograph hour hand return to zero position.

Chronograph reset (inkl. after replacing battery)

This procedure should be performed when the chronograph 2nd hand does not return

to zero position after the chronograph has been reset, and including after the battery has

been replaced. Pull the crown out to the 2nd position. Then press button „A“ to set the

chronograph 2nd hand to the zero position. The chronograph hand can advanced rapidly

by continuously pressing button „A“. Once the hand have been zeroed, return the crown

to the normal position.

date indicator