With the use of Strapless technology the Bowflex Classic strapless watch requires no chest strap to get accurate heart rate. Wear all day as a watch and you can also have your heart rate at the touch of a button. Ideal for walkers. Features include, strapless heart rate, time, recalls last 20 readings, lowest and highest readings, extra large display, night vision, countdown timer and lap re-call for 42 laps. Monitor watch provides heart rate measurements and recalls up to 42 laps No need for a cumbersome transmitter chest strap Countdown time and pacer mode/chronograph mode for interval training Touch sensors make measuring your heart rate effortless LCD display is large and easy to read