Look: Kéo power dual Mode Essential The Power Of Precision The Kéo Power Is The Go-To Pedal For Advanced Cyclists & Triathletes That Want To Analyze Their Performance With The Intention Of Improving Upon It. It Measures Power, Force, & Cadence. Power Is An Essential Piece Of Information To A Cyclist Because Independent Of The Environmental Conditions & Level Of Fatigue, It Will Provide An Unbiased Measurement Of his Or Her Fitness Level & Training Intensity. The Essential Version Measure Data From The Left Pedal. Reliable Power Measurement The Kéo Power Dual Mode Is The Third Generation Of Look Power Meter Pedals. The Measurements Of Motor Effort Are Provided By 8 Strain Gauges Installed In Axle Of Each Pedal. This Ensures A Reliable Power Measurement Because It Is Calculated Directly Where The Force Is Applied By The Rider. For Even More Precision, The Regular Version Has A Sensor In Each Pedal Which Provides An Individual Power Output Measurement For Both The Left & Right Leg. With The Essential Version, Data Is Only Measured From The Left Pedal. In Addition To The Power & Cadence Reading, The Kéo Power Measures Your Strength, & Pedaling Efficiency (Dead Spots/regularity). Compatible Bluetooth & Ant+ Easy & Fast Installation Installing A Power Meter Is Not Always Easy. Kéo Power Solves This Inconvenience By Integrating The Sensor Directly Into Your Pedals For A Straightforward & Fast Installation In Minutes. As A Result, It Will Be Very Easy For You To Move Your Power Meter From On Bicycle To Another If Needed, Contrary To Other Non-Portable Systems. The New Sensor Design Makes It Compatible With Virtually All Existing Pedals. The Battery Life Of The Transmitter Is 150 H & Can Be Easily Recharged With The Included Docking Station. Its Software Is Easily Updated Via The Kéo Power App.