The ultimate personal workout timer for all training demands. Ultra compact size can be clipped to waistband or set aside for all training requirements. Set training round or duration time from 10 seconds to 60 minutes. Set rest time from zero to 60 minutes. The Training Timer continues to run the set intervals for as long as you desire. The Training Timer can also be utilized as a countdown timer for specific durations or working corners. Alarm function can be set to beep or vibrate to alert start and end of rounds. Perfect for all heavy bag, speed bag and double end bag workouts, plus shadow boxing, punch mitts, sparring, grappling, jump roping, running, sprinting, and much, much more. Now with bonus Rounds feature to allow athletes to train for a preset number of Rounds from 1 to 99, depending on activity. Requires one AAA battery included.