Stages magnet-free Speed sensors fit to your hub to provide real-time, accelerometer-based speed data to your cyclometer or phone via ANT+ and Bluetooth Smart.

Description
-Compatible with most wheels

-Installs/removes in seconds

-IPX7 Water Resistant

-Superlight – just 8 grams

-Runtime: 600 hours

-Operating range: 2-60 mph

-Blue and red LED’s indicate pairing, activation and low battery status