The Polar FT4 Fitness Monitor is for those who want basic heart rate-based features to keep their fitness training simple. WearLink+ transmitter chest strap accurately measures your heart rate. Watch offers average and maximum heart rate during total exercise time; includes time spent in target zone. Visual and audible alarm alerts you every time your heart rate exceeds the upper limit or falls below the lower limit of your target zone. OwnCal counts and displays calories burned during a training session; also displays accumulated kilocalories from several training sessions for long-term goals. HeartTouch function enables button-free operation of certain heart rate functions; simply bring the watch close to the transmitter on your chest to change functions. Keeps track of the number of training sessions, total training hours, total time of in-zone training and total burned calories. Watch features include time of day with alarm and snooze, date and weekday indicator, stopwatch and low-battery indicator. Water resistant to 50 meters.