Product Description: Quantity: 1pcs Color: black Color LCD Backlight Display -It allows you to read the digital easily remotely, especially in the deep dark night or in the long tunnel Accurate Data Results - Developed from high-end smart chip technology to establish a powerful and stable type of bike computer quality, the cycle computer can maintain accurate data transmission on your cycling activity Wireless and Waterproof Design - Wireless and Waterproof Design Makes It More Convenient and Durable. Never worried about the complex in install the wires on your handlebars,and no need to worry about the rainy day. NOTE: Dont put in the rainstorm or stay in water Multi Functions - A variety of functions to meet your different riding needs. It works well to Measure Average Speed, Maximum Speed, Tripmeter, Digital Clock, Calories, Stopwatch (SW), Temperature (TEMP), keep abreast of the riding dynamics Applicable with Most Bike - Road Cycling, Mountain Bikes, Folding Bike,Common Bicycle,Pit Bike/Dirt Bike.Also be used for hiking, climbing, and many other fun, adventurous outdoor activities. Easy to install and use