Waterproof Wireless Mountain Bike Computer Bicycle Speedometer Cycle Odometer MA FEATURES: Wireless bicycle speedometer with LCD display. Monitor your bikes speed, distance and riding time. Wireless design is more convenient and good looking. Ideal for bicycle training and doing exercise. Lightweight, durable.  Make your sports life more free and comfortable Specifications: [Speed and distance measurement] The device not only displays the maximum/average/action. Speed, as well as distance and time data, can be used to adjust driving or training programs. [Wireless] The bicycle speedometer is made of high-quality wireless technology to provide stable wireless transmission and ensure the accuracy of driving data. (The parts should be used in the correct position: the distance between the sensor and the magnet should be within 5mm, and the distance between the sensor and the bicycle computer should be within 60cm.) [Multifunctional and easy to use] Stopwatch, timer, automatic wake-up, KMH/MPH switch... all these functions can be realized with only 2 buttons. Please fill in the correct wheel circumference before use. [Backlight] The green LED backlight of the bicycle computer can be used at night. Simply press the "SET" and "MODE" buttons to turn on/off the lighting. Colour: Black Size: 6 * 4.5 * 2cm Package Included: 1 x Bicycle Speedometer 1 x Bracket set 1 x Wireless sensor 1 x Magnetic safety sensor 1 x Rubber band 2 x Adhesive discs 4 x Fastening strap 1 x User Manual