Easy to install Rechargeable batteries ensure 50 hours of use Smart, cutting-edge cycling technology to make the most of each pedal stroke, with the utmost certainty Available in single (UNO) or dual (DUO) Assioma communicates via Bluetooth and ANT+ with bike computers and smartphones, both Android and iOS Assioma Pedal Based Cycling Power Meter::Easy to install. Rechargeable. Smart. Meet the Assioma Pedal Based Power Meter from Favero Electronics. With Cutting-edge cycling technology to make the most of each pedal stroke, the Assioma is extremely accurate with precise watt measurement thanks to years of careful research and development. Experience impressive ease of use, precision and reliability with no protruding elements or interference while you're outo on the road. Integrated and rechargeable, get at least 50 hours of battery life with a single charge. Available in two versions: Assioma UNO (with power sensor on the left pedal) and Assioma DUO (with power sensors on both pedals).