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These Heart Rate Monitors feature: chest strap/sensor that transmits to wrist watch receiver for continuous display of heart rate; water resistant to 50 meters.
The importance of heart rate cannot be over-stressed -- it is the barometer for the rest of your body.
Polar FT1 Heart Rate Monitor (Model 60907)
Polat FT7 Heart Rate Monitor (Model 60917)
FitnessMart division of Country Technology, Inc.