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This timer is set to 75 minutes. Press Start and the flip clock counts down from 1:15:00 to zero, then an alarm rings. You can pause it at any time and start it again with one click.
Here are some ways to use this timer:
75 minutes is 4,500 seconds.
Yes. The timer keeps exact time while you use other tabs or apps and rings when the time is up. Keep this tab open, and on a phone keep the screen on so the browser can play the alarm.
Yes. Pick another preset or type your own hours, minutes and seconds under the timer.
Not while it sleeps: a sleeping device pauses the browser, so the alarm rings when it wakes up. For long timers, plug in your device and keep it awake.