Markwort Pulse Pedometer Pulse/heart-rate sensor. Press the red button and place your fingertip on the sensor Counts steps, miles and calories. Weekly memory. Exercise timer and clock function. Count-down timer. Speed of travel (mph & steps per min.) Lap timer False step sensor for the best accuracy. Dual screen display. Pacer mode. Stop watch functions. 1 year warranty. 2 inch x 2 inch In just a few seconds you see your heart rate (beats per minute)