Wahoo RPM Cadence Sensor$54
The NEW Wahoo RPM Cadence Sensor is a wireless, magnet-less, lightweight, cadence sensor. This sleek, Bluetooth 4.0 and ANT+ enabled cadence sensor is easy to install, connects wirelessly to your iOS or Android device, and displays your cadence data (through the free Wahoo Fitness App or your favourite cycling app).
Sleek, sexy, and light weight design - only 7 grams. Easy to install with no magnets! Two mounting options included: (1) mount with double sided 3M tape, or (2) use the silicone sleeve and mount with zip ties. Universal Fit means RPM will work with any bike.
No charging required - operates on a coin cell battery for up to 2 years without ever taking it off your bike. LED lights flash to let you know that you're connected & ready to ride!