Meet the Sunny Bike Cadence Sensor CB110: a Bluetooth enabled gadget that combines with your smartphone to help you track your workouts. It is ready for indoor and outdoor bikes. The SunnyFit app gives you access to over 1000 training videos.
This cadence sensor tracks your time, speed, RPM, distance, and calories. To get started, simply put it on the rubberized mat and warp it around your bike’s crank. This sensor has LED lights to show mode.