Train smarter and get fitter and stronger faster with Look's Keo Power pedal system. It lets you measure and track your power (watts), cadence and even your left/right power balance to maximize your pedaling efficiency. Look teamed up with the experts at Polar, so that the Keo Power system wirelessly transmits your data to a Polar CS500, CS600 or CS600X computer (sold separately). You can also download, track and analyze your rides through Polar's training website. The pedals boast wide contact areas for easy entry/exit and excellent efficiency so that all your energy goes into forward motion. The Keos also have light carbon bodies, durable sealed bearings and stainless-steel contact plates to minimize cleat wear. Perhaps best of all, because it's part of the pedals and not inside the wheel or crankset, like other power systems, Keo Power can easily be moved between your training, race and time trial bikes!