The Stages magnet-free Speed Sensor fits to your rear hub to provide real-time, accelerometer-based speed data to your cycling computer or phone via ANT+ and Bluetooth Smart.
Compatibility: Compatible with most wheels
Water Resistance: IPX7
Weight: 8 grams
Runtime: 600 hours
Range: 3 – 96 km/h
Installation: Installs to / removes from the rear hub in seconds
Operation: Blue and red LED’’’’s indicate pairing, activation and low battery status