Polar RS400SD Running Computer

You demand more information and analytical feedback. You want to shave off minutes and seconds from

You demand more information and analytical feedback. You want to shave off minutes and seconds from your personal best with proper training planning. RS400sd is your system for planning; monitoring and analysing your running. With daily information on your aerobic fitness and running economy; RS400sd meets your needs as an active runner with racing aspirations. Comes with the same running features as RS400; plus detailed speed/pace and distance tracking. Compatible with Polar Training Plan

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