ANT+&BLE 2 IN 1 SPEED AND CADENCE SENSORTransmit speed and cadence data via ANT+ and BLE using this universal sensor which easily mounts to most chainstays. Features     Material: Hardened plastic     Use: To transmit Ant+ or BLE     Features: Speed and cadence sensor     Extra: Speed and cadence magnets     Fits: Mounts to most chain stays