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The Cycleops Powertap Magnetless bike sensor measures either speed or cadence without requiring a magnet. Its function is selected by its orientation: horizontal for speed and vertical for cadence. It collects data using an accelerometer and connects via Bluetooth or ANT+.
It mounts on the crank arm or on the front or rear of the wheel hub. Its low-profile design makes it suitable for a wider range of bicycles, while the white indicator light corresponds to speed measurement and the green light to cadence measurement.
Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.