倒數計時

使用步驟

Run a countdown in this tab. Closing the tab stops it. It is not a system alarm.

1. Open Countdown

   Hours, minutes, and seconds sit on the left. The remaining time is on the right.

2. Set a duration

   Start, pause, or reset. The count only runs while this tab stays open.

3. Watch it hit zero

   At 00:00:00 the timer stops. Reset to load the fields again.