间隔计时器

使用方法

1. Set the prepare, work and rest lengths in seconds, and the number of rounds.
2. Press Start. The timer runs prepare, then work and rest in turns, automatically.
3. A beep marks each phase change: a higher pitch for work, a lower one for rest.

注意事项

There is no rest after the final round's work phase; the timer ends there. Each phase computes its remaining time from an absolute end time, so background tabs do not drift it.

常见问题

Can I use it for Tabata (20s work, 10s rest, 8 rounds)?

Yes. Set prepare to 10, work to 20, rest to 10 and rounds to 8.

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