Tracking your fitness has been made easy, get everything you need to accurately measure your cycling metrics with the Sunny Health & Fitness Exercise Cycling 2-in-1 Cadence + Speed Sensor - CB110. Installation is easy so you can stay focused on your exercise. This sensor is Bluetooth and ANT+ enabled which allows you to connect seamlessly with any mobile device. Use this to track your Cadence / RPM as well as your speed during indoor cycling or on the road while exercising outdoor! Two LED lights indicate the sensor's device connection: blue light signifies cadence mode and red light represents speed mode; please refer to the user manual for more details on the lights. Sync with the Sunny Health & Fitness SunnyFit® app for the best cycling experience.