Powered by one button battery, energy-saving deisgn can offer you a long working endurance. The sensor is super sensitive and can work in wide range of harsh weathers and temperatures. Comes with necessary accessories, the bike speedometer is easy to install or disassemble, good accessory for riding lovers. Large LCD dispaly supports bright backlight, can make you read readings clearly in both day and night, convenient to use. This bike computer is multifunctional, it can show you data of riding speed, total mileage, single mileage, average speed, max speed, riding time, calories, temperature, etc. Color: As Shown Material: plastic Package Contents: 1*Backlight Bike Computer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.