best gps heart rate monitors

Watch the best working distance. / Heart rate monitor?
I am new to this type of work and need to check my heart rate. Distance is another important and. am not sure whether or GPS Pedometer best.
Garmin forerunner 305. Pedometer depends on the distance and these pants as widely different ways you tired of your weather. Or not you use them up or down, etc..
Buy cheap Garmin Forerunner 305 gps receiver with heart rate monitor reviews online
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