Cycling power meter with sensor on the left pedal only. 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.