A low profile and angle adjustable sensor for an integrated look and easy installation. Compatibility with a variety of Bluetooth Smart and ANT+ wearable devices and mobile training apps. Mounts to any chainstay Works with any Bluetooth Smart and ANT+ enabled systems IPX 7 waterproof rating 900 hours battery life 6.5x2.9x1.7cm 20g
Best Price: £31.99 from Cyclestore