This is a brand new Reebok Dual Heart Rate Monitor. RB1171BK. It is perfect for Running, Cycling, Fitness, etc. It monitors Heart Rate continuously, Heart Rate by Touch, Fat Burning Zone, High and Low Heart Rate, Calories Burned, Exercise Time, and Workout History. Works with and Without a Chest-Belt. Ideal for Cardio Tracking and for Resting HR Tracking. Additional features: digital time, date and alarm, Countdown Timer, Stopwatch, Lap Timer, Back Light, Water Resistant to 50m.