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All-day activity tracker and all-night sleep tracker, supporting vibrating clocks to wake you up 7*24H all-day heart rate monitor, measuring fatigue any time any where on your wrist. Accurate Heart rate date, same as Polar professional heart rate belt Built-in 17 professional sports modes - running, cycling, basketball, mountain, fast walk, climbing, badminton, table tennis, soccer, volleyball, sit-ups, rope-jump, yoga, dance, aerobics, ice-skating, tennis. Mode can record SWOLF and laps Smart track: automatic recognize 3 sports modes: running, ball game and cycling.