IGPSPORT CAD70 Cadence Sensor with Bluetooth ANT+ SPD70 Speed Sensor Speedometer
Model: CAD70. 1/2 Cadence Sensor. Support to connect any BT5.0 or ANT+ enabled device and smart phones. Wireless transmission: BT5.0 ; ANT+/2.4G. Easily install on your bike's crank arm with the included rubber rings.