Cycling Bike Bicycle Cycle Computer Odometer Speedometer Waterproof Features: Real-time display of the current speed,trip distance,riding time,trip time,calorie consumption, current time and current date. Easy view of the maximum speed,average speed ,total riding time, total riding distance and rotations per miunte of the wheel. Night light feature with high-brightness light source for a clear view of all data during your night trip.Length unit options of klometer/mile. Low battery indicator for you to know the working conditions of the odometer. Bicycle oil/maintenance reminder to secure your bicycle's best performance and service life. Options of 12h/24h systems,stopwatch feature and alert feature for bicycle maintenance. A stopwatch for you to check the data in competitions. Speeding reminder for safer cycling. A wide range of use on 4-40" bicycles/electric bicycles or even motorcycles. Real-time indication of acceleration or deceleration for easy control of your speed. Imported sensors to provide stable performance. Modern looks,rainwater-proof,portable and easy to disassemble. Specification: Screen Size:3.2x3.2cm Color: black, red Battery: 1 x CR2032 Package includes: 1 x Bike Computer 1 x Mounting Shoe 1 x Wheel Magnet 1 x CR203 Button Battery 5 x Cable Ties 1 x Manual User "