The Stages magnet-free Cadence Sensor fits to your crank arm to provide real-time, accelerometer-based cadence data to your cycling computer or phone via ANT+ and Bluetooth Smart.
Compatibility: Compatible with most crank arms
Water Resistance: IPX7
Weight: 8 grams
Runtime: 600 hours
Range: 18 – 200 rpm
Installation: Installs to / removes from the crank arm in seconds
Operation: Blue and red LED’’’’s indicate pairing, activation and low battery status