*timer function
count-up timer
count-down timer
*time display
* 2 modes of time display:
12h / 24h
*Power-supply: 1.5V (LR 44) ×1
count-up timer
count-down timer
*time display
* 2 modes of time display:
12h / 24h
*Power-supply: 1.5V (LR 44) ×1