Stages magnet-free Cadence sensors fit to your crank arm to provide real-time, accelerometer-based cadence data to your cyclometer or phone via ANT+ and Bluetooth Smart.
Compatible with most crank arms
Installs/removes in seconds
IPX7 Water Resistant
Superlight – just 8 grams
Runtime: 600 hours
Operating range: 18-200 rpm
Blue and red LED’s indicate pairing, activation and low battery status