Polar RS400 Heart Rate Monitor Watch Wrist-style heart rate monitor and stopwatch geared for active endurance athletes With optionally available S1 footpad, take advantage of the RS400's Speed and Distance functions One of the largest displays in the industry and a fully user-configurable exercise view Includes Polar Protrainer 5 training, planning and analyzing software Dual time zone, alarm with snooze, and water resistance to 50 meters