the polar look keo power essential ble pedals 2016 combine the experience of polar and look, obtaining the first automatic pedals that get a measurement of the power generated in each pedal stroke and promote the improvement of the technique of the cyclist. features: -automatic pedals. -with bluetooth smart technology. -low energy consumption. -measure the power generated in each pedal stroke. -easy to attach to the cranks. -maximum precision and data transfer. -wattage instant information. -improvement of the technique of the cyclist. -measurement of the current cadence and average. -includes pair of pedals and power output sensor. -obtains data on the use of force on the pedal using the function of the force vector. -compatible with iphone 4s and later, and with selected android devices (samsung galaxy s3 and s4 using android 4.3 or later).