Take your pedaling efficiency to the next level by using the COROS Bike Cadence Sensor. Tracking your cycling cadence helps you find your ideal pedal stroke to ride longer, stronger and more efficiently. Easily pairs with your bike computer, smartwatch, or smartphone via Bluetooth – it even works with most spin bikes. Track your RPMs to optimize pedaling efficiency Integrates with most bike computers, smartwatches, and training apps via Bluetooth Easy to install with a compact design that mounts to your crank arm CR2032 battery lasts up to 12 months IP67 water rating for all-weather protection and durability Ultra-lightweight at 11g Compatible with most bikes, including indoor spin bikes, not compatible with ANT+ devices COROS Bike Speed Sensor