This digital sports watch with heart rate monitor from pyle sports has everything you need to manage your workouts. set a target heart rate based on your age, then start working out, the watch then displays your current heart rate in bpm and as a percentage of your maximum heart rate. an alarm automatically sounds when you reach your target zone. keep track of approximate calories burned with the calorie counter. and of course, keep the time with the clock. built-in el backlight makes night usage easy and simple. pyle sports: recreational gear for the great outdoors!