A 12-minute rehearsal
Give the session a beginning, a cue, and an end
Set 12 minutes for a short presentation rehearsal. Add a one-off alarm point at 2 minutes remaining as a wrap-up cue, then let the final alarm mark the end.
12:00 remaining
Start speaking
The countdown begins. The duration is a budget, not a time of day.
02:00 remaining
Start your closing point
Ten minutes have elapsed. A one-off remaining-time mark chimes without stopping the countdown.
00:00 remaining
Finish and dismiss
The final alarm repeats until dismissed or reset.
Recurring cues use a different clock
A recurring interval of three minutes gives regular pacing cues during the session. A one-off mark of two minutes remaining is tied to the end instead. Decide whether you need repeated reminders or one closing signal before enabling both; otherwise the sounds may be harder to interpret.
Choose and test the interval, one-off, and final tones before starting. Check your device volume and whether the browser tab is muted. Sound needs a user interaction such as Start or Test before a browser will allow it.
Pause, reset, or make it visible
Pause preserves the remaining time so you can resume the same rehearsal. Reset ends the current run. Fullscreen makes the display easier to see across a room; press Exit or Escape to return.
Where supported, fullscreen requests a screen wake lock. The browser or device can decline or release it, so test your actual setup rather than relying on it to defeat all sleep settings. Changes to the device clock can also affect timestamp-based timing.
A duration of zero cannot start. This timer measures a duration, not a scheduled appointment at a particular clock time. Timing and synthesized sounds run locally, and reloading clears the session.