Get precision power for all your rides. The Rally(TM) RS210 power meter pedals for road (compatible with SHIMANO SPD-SL cleats) provide accurate power data and allow you to easily swap to Rally(TM) XC210 off-road pedal bodies. RS210 models are dual-sensing for additional metrics, including left/right balance and more. The redesigned pedals are made of carbon for reduced weight and enhanced durability. They're also rechargeable with up to 90 hours of ride time. Put your pedals in travel mode during transport to conserve battery life. These power meters are highly responsive and +/- 1% accurate. To maximize accuracy, the Pedal IQ(TM) smart calibration feature alerts you when you need to calibrate based on several factors.