Wake me up in 15 minutes 35 seconds. Set timer for 15 minutes 35 seconds. Set the alarm for 15 minutes 35 seconds from now. It is a free and easy-to-use countdown timer.
Set this 15 minutes 35 seconds timer and let the countdown start. Use it to control the time limit of any activity and be notified when that limit has been reached. When the countdown stops, an alarm sound will ring.
Start 15 minutes 35 seconds timer.