The AccuSplit AE920HRM Wristwatch Heart Rate Monitor is a new training device in AccuSplit"s already powerful line of stopwatches and pedometers. The AE920HRM is a strapless heart rate monitor worn on your wrist like a watch. Unlike other heart monitors, this is an easy-to-use device that allows you to retrieve your heart rate when you need to, as well as use other stopwatch and training features and functions. This heart rate monitor is great for school activities, allowing more time for learning and activities and less time suiting up your students with cumbersome straps.The AE920HRM gives heart rate functions at the touch of two silver buttons, displays heart rate in five seconds on demand, and uses advanced detection and processing for an accurate EKG heart-rate computation. Designed to be comfortable all day, the AE920HRM also includes time of day, time-of-day alarm, stopwatch, and timer functions, and comes with the AccuSplit exclusive five-year no-proof-of-purchase warranty.