Wahoo Fitness Powerlink Zero Single-Sided Power Pedals - Dual Sided Clipless Composite 9/16" Black Pair Single-Sensing Speedplay. Built on the cutting-edge Speedplay Pedal System Powerlink Zero single-sided power pedals deliver reliably accurate power and cadence data in a race-proven pedal system. This powerful combination creates an unrivaled power pedal that helps cyclists optimize performance by providing the visibility adjustability and efficiencies needed to break through to the next level. Pair with the Wahoo ecosystem of smart devices for a more full picture of your data and performance and to track analyze share and improve.Single-sided power metrics measure cadence from the left pedal; power is tracked and doubled to estimate total power output no matter where you are crushing watts with lab tested +/- 1% power accuracySimple and intuitive Wahoo Fitness app offers guided instructions on how to install Powerlink Zeros on any bike calibrate the pedals for accuracy and perform firmware updatesSimultaneously connect to three Bluetooth devices while broadcasting to an unlimited number of ANT+ devicesPowerlink Zero is built on on the dual-sided entry Speedplay Pedal System which maximizes power transfer by putting your foot closer to the spindle. No more fumbling fussing or kicking your pedal over; leverage a powerful take off when the light turns green and clip in with easePowerlink Zero and the Speedplay Standard Tension Cleat create a secure connection and a streamlined profile. The two form a seamless integration that aids power transfer and increases aerodynamics. The slim profile cleat and rubber texture create enhanced stability when walking in your road shoes off the bikeThe cleat can be positioned on the bottom of the shoe and adjusted fore-aft left-right and rotationally allowing between 0-15 degrees of float allowing the heel to pivot around the center of the pedal. This range of motion in the foot lower leg and knee increases comfort and enhances pedal efficiencyUncompromised durability and minimal maintenance thanks to their stainless steel construction and triple-sealed bearing systemPowered by a rechargeable lithium battery Powerlink Zero power pedals have a battery life with up to 75 hours tested and proven to provide accurate power data across changing temperatures that you are sure to encounter while ridingPair with the rest of the Wahoo Ecosystem compatible devices for the most connected training experience.