Movement No.B620

Component Roles

Time display

Hour hand Shows the hour.
Minute hand Shows the minute.
Second hand Shows the second.
Date display Shows the date.
24-hour hand Shows the hour in 24-hour display mode.

Other displays

Chronograph
minute hand
Shows the minute on the chronograph (Stopwatch function).
Chronograph
second hand
Shows the second on the chronograph (Stopwatch function).

Operation (crown)

Crown Allows you to adjust the time and date.

Normal crown

Can be pulled out in 2 steps.

Screw-lock crown

The crowns on some models can be screw-locked to prevent unintended operation.
To apply the screw-lock, press the crown in while turning it.

Operation (buttons)

B button Used for operations such as starting and stopping the chronograph.
A button Used to reset the chronograph.

Hidden buttons

On some models, there are hidden buttons.
Press them using a toothpick or similar
implement that will not scratch the watch.

Screw-lock buttons

The buttons on some models can be screw-locked to prevent unintended operation.
To apply the screw-lock, press the screw section inwards while turning it.