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1.Accurate wireless heart rate measurement
2.Suitable to wear anytime, whether for exercise or leisure
3.MULTIPLE FUNCTIONS:Alarm/Chronograph/Exercise/Calories Burnt/Alarm/Timer/Laps/Tracker
4.5.3KHz Transmitter belt;Six days memory record;3ATM waterproof;Chest Belt: Splashproof
5.Display the percentage of real heart rate value to maximun heart rate value based on different age