The single-sided version measures power and cadence in the left pedal only, and is compatible with all Bluetooth and ANT+ enabled head units. The RK100 pedals can be installed without any special tools, just like regular pedals, meaning they can be easily transferred from one bike to another. Fully weather sealed, they are powered by 4x LR44 type batteries which have a continuous use of 120 hours and measure power within +/- 1% precision.