A shot clock intended for use in billiards.
The basic operation is just to press the START / STOP button!
The previous history is displayed in the upper right corner of the countdown display.

You can change the following items on the setting screen.
・ Shot clock count time (30-60 seconds)
・ Remaining time to make the first call (OFF to 30 seconds)
・ Remaining time to make the second call (OFF to 30 seconds)
・ Presence / absence of notification sound when time is up

There is a banner advertisement, but it is not displayed on the main screen, so I think that it can be used for games etc.