Features1Real-time display: Current speed, riding time, riding distant and current time and date. 2Show data: View the Average/Maximum speed, Accumulated distance/ RPM/Calories consumption, Accumulated time/Trip time, Temperature/Date. 3Back light: LCD display with back light allows you to read riding data easily and clearly during night trip. 4Convenient: Buttons control for easy operation. Small size, light weight and easy mount on your bike. 5Stopwatch for you to check the data in competitions. 6Unit options of kilometer / mile, 12h / 24h systems, Celsius / Fahrenheit temperature systems. 7IPX5waterproof for good conservation in raining days.Please do mot soak into water for long time.SpecificationTo track your riding speed, distance, RPM, time and calories?and so on data so you can?master your Cycle state and have a adjustment at any time. Features:Real-time display: Current speed, riding time, riding distant and current time and date. Show data: View the Average/Maximum speed, Accumulated distance/ RPM/Calories consumption, Accumulated time/Trip time, Temperature/Date. Back light: LCD display with back light allows you to read riding data easily and clearly during night trip. Convenient: Buttons control for easy operation. Small size, light weight and easy mount on your bike. Stopwatch for you to check the data in competitions. Unit options of kilometer / mile, 12h / 24h systems, Celsius / Fahrenheit temperature systems. IPX5waterproof for good conservation in raining days.Please do mot soak into water for long time. 14 Functions:Date and Time(DA) Temperature(Th) Riding speed(SPD) Maximum riding speed(MAX) Average riding speed(AVS) Riding distance(DST) Accumulated distance(ODO) Calories(CAL) RPM Riding time(RT) Riding accumulated time(RAT) Trip time(TT) Stopwatch LED back light KM/MM, C Degree/F Degree, 12h/24h conversion Specification:Model: Wired / Wireless (optional) Material: Plastic Waterproof: IP X5 Power: 2 * 3.0v 240mAh CR2032battery (included) Host size: 5.5 * 4.3 * 2 cm / 2.1 * 1.6 * 0.7 in Host weight: 30 g / 1.0 oz Package weight: 64 - 71 g / 2.2 - 2.5 oz Package List:1* Bike Computer 1* Sensor 1* Magnet 5* Ribbon 1* Mounting Bracket 1* Foam PadPackage List1* Bike Computer 1* Sensor 1* Magnet 5* Ribbon 1* Mounting Bracket 1* Foam Pad