Get precision power for all your rides. The Rally RS110 power meter pedals for road (compatible with SHIMANO SPD-SL cleats) provide accurate power data and allow you to easily swap to Rally XC110 off-road pedal bodies. Rally RS110 features a single power sensor to track total power and cadence, with the option to upgrade later to dual sensing. 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 smart calibration feature alerts you when you need to calibrate based on several factors.