Description: 【LCD Digital Display】The large LCD display guarantees you can read your statistics from the bicycle speedometer easily. 【Auto Wake-up Function】Built-in Ball Switch, automatically turn on from sleeping mode when sensing the vibration after shocking bike computer body, easier to operate than conventional bike odometer. 【Easy to Install & Use】It is easy to follow instructions, great basic functions of the speedometer and very specific tire size that enable accurate calculations. 【Multi-functions】Small Size, Light Weight, Wireless & Waterproof design make the bicycle odometer more convenient and durable. It works well to Measure Speed, Distance and Riding time, especially suitable for cycling or fitness enthusiasts. 【Day & Night Backlight】Green & White color on the odometer display to distinguish between Day and Night. Please note the slight rattle sound from device is normal phenomenon, which results from the design of wireless automatic function. Function Introduction 1.Display Five Languages 2.Clock 3.Stop Watch 4.Temperature 5.Metric/Imperial alternative 6.Scan:Automatic Circulation 7.Wheel Setting 8.Analogy Speed indicator 9.AUTO ON/OFF 10.Trip up/down 11.Calorie consumption(KCAL) 12.LED backlight 13.Current speed 14.AVG speed/MAX speed 15.Speed comparison prompts 16.Riding Distance/time 17.Total distance/time 18.Weekly riding time/distance 19.Automatic memory and updated every weekly Upgraded Version description : Size:6.0*4.4*1.5CM/1.73*0.24*0.59inch Screen: 2.1inch Display Five Languages (English,Deutsch,France,Dutch,Espanol) Package Included: please go to check the picture of listing.