SLEEK AND EASY TO INSTALL (NO MAGNETS) - Universal fit fits most bikes and frame sizes. Cadence sensor attaches to a bikes crank arm or shoe; Speed sensor attaches to a bike's wheel hub. Mounts included
VISIBLE CONNECTION Two LED lights give instant feedback: the sensor's device connection (blue) and RPM detection (one red blink per crank turn).
All you need for cycling data, all together at once! the Wahoo RPM speed and cadence sensors are sleek, wire and magnet-less solutions for capturing cycling speed and cadence data on your iPhone, Android, and bike computer. Each mounts easily to your bike while dual-band Bluetooth 4.0 and ant+ technology allows for simultaneous transmission of display data on both smartphone and GPS bike computers. Collecting speed and cadence data has never been this easy. waterproof up to 5 feet.
Two Bike Mount Options: (1) mount with double sided 3M tape, or (2) use the silicone sleeve and mount with zip ties