Timex Full-Size T5K560 Health Touch Plus Heart Rate Monitor Watch Fitness tool helps you take control of workout program and achieve longterm goals; Workout mode lets you track training progress and total distance traveled Lets you see in-workout heart rate information with a quick tap of your finger; no chest strap required Accurate heart rate on demand in three formats: beats-per-minute (BPM), percentage of maximum heart rate, and high or low zone Distance sensor tracks steps through natural swinging motion of the arm; fast and simple stride calibration. Includes limited one-year manufacturer's warranty Please make sure to hold down the ON/OFF button to begin the heart rate reception and wear the wetted strap against the skin. We need to moisten the back of the strap prior to using it.