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To start the timer, search Google for [timer 10 minutes], [countdown 5 minutes], [set timer for 30 seconds], [start a timer for 1 hour and 45 minutes], [set a timer for half an hour], [start a timer until 13:00], [start a timer until midnight] and more.
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It's worth pointing out that you can use both features simultaneously.
{ Thanks, Jonah Langlieb. }