Power Option for Polar S-710 and S-720i
 Power Option for Polar S-710 and S-720i Measures your power output via chain tension, it will also tell you which foot is doing more work, to help you even out your pedal stroke and increase efficiency (Power Kit includes wired cadence). Must be used with Polar S-710 or S-720i. Item no longer available. Click Search to find alternatives... |
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