The Bowflex Hybrid Plus is the only heart rate monitor with or without a chest belt. You can choose between wearing a light comfortable chest belt that offers continuous heart rate or use quick touch technology for seeing heart rate without having to wear a chest belt. Bowflex Hybrid Plus displays heart rate with or without wearing a chest belt. The Bowflex Hybrid Plus is great for beginners and advanced athletes using strapless heart rate technology or continuous heart rate with the chest belt. Features include: Time of Day, Calendar, Average Heart Rate, Maximum Heart Rate, % of Max heart rate, Stopwatch, Recovery timer, High/Low target zone and calorie counter. The Hybrid Plus is the first to offer button-less heart rate sensoring. Picks up heart rate by touching and holding anywhere on the top of the watch for 2 seconds.