This portable and lightweight speedometer and odometer is for measuring both speed, distance and riding time, especially suitable for cycling or fitness enthusiasts. The LCD display with big numbers allows you to easily see the states even you are riding. Its waterproof design makes it more convenient and durable. Features -Color: Black -Material: Plastic & Electronic Components -Size: Approx. 7 x 4.5 cm / 2.76 x 1.77 x 0.79 inch - Applicable: Road bicycles, mountain bikes, folding bikes,and other common bicycles are compatible with this computer. - Compact design: compact size and lightweight speedometer is easy to install on the handlebar. - Can be used as a practical and considerate present to your friends who like riding bike. - Can be used to measure both speed, distance and riding time, especially suitable for cycling or fitness enthusiasts. - Backlight function and LCD digital display allow you use this bike computer day or night. Specification -Wireless sensing distance: </= 60 cm -Distance between magnet and sensor: </=3mm -Measurement Accuracy: 0.01 -Waterproof: IPX7 Package list: 1 x Set of Bike Computer