For you who want to get a fitter body by knowing how many calories you have burned. The small & simple F4 gives you accurate information & motivates you to reach your targets.
Features
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Calorie expenditure Stop watch
Average heart rate visble & audible alarm complete set consisting of chest strap (transmitter), elastic strap & watch (receiver)
Light & flat shape, barely noticeable
Water resistant up to 30m
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