DR.VIVA GPS Watch for Men Women, Activity Tracker GPS Running Watch Touch Screen Sports Watch Heart Rate/Sleep/Step/Counter Monitor Waterproof GPS Fitness Watch
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 … Continue reading