Cadence and Speed Flow Sensor, O-Ring Mounts, Spoke Magnet, Crank Arm Magnet

Super compact and lightweight magnet-less cycling cadence sensor. Translucent Composite Matrix construction with LED indicator. Simple installation that mounts to a crankarm. High-tech dual Bluetooth system that can simultaneously pair with cycling computers and smart trainers. Features a replaceable CR2032 battery. SPECS WEIGHT: 11g DIMENSIONS: 37 x 33 x 13 mm