Citizen B51, Instruction Manual

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2. Explanation of Displays and Buttons

Please refer to the illustration of the watch on the inside cover.

Name

Time display

Hour display

Minute display

Second display

24 hour display

Setting the time and date

Chronograph display

Chronograph second (1/5
second) display

1: Hour hand

2: Minute hand

3: Second hand

4: 24 hour hand

5: Chronograph second hand

6: Chronograph minute hand

A: Button

B: Button

C: Crown

Chronograph minute display

Start/stop

Reset

A

B

1. Features

This analog quartz watch incorporates a solar cell in the watch face.  In addition to being
equipped with a photoelectric power generation function that converts light energy to
electrical energy, it also is equipped with a self-winding power generation function that
converts "movement of the watch" produced by swinging the watch while wearing on
the wrist into electrical energy.  Once fully charged, the watch will continue to run for
approximately 5 months without recharging. In addition, this watch is also provided
with a chronograph function (60 minute clock) that allows measurement of time in 0.2
second (1/5 second) units.
This watch also uses a secondary battery for storing the electrical energy that is gener-
ated.  This battery is completely free of mercury and other hazardous substances.  Since
this secondary battery is able to be repeatedly charged and discharged, it is not required
to be periodically replaced as in the case of ordinary watch batteries.