SunsbellLED Display Bicycle Computer Waterproof Cycling Speed Meter 24 Function Odometer Speedometer Real-time display of the current speed,trip distance,riding time,trip time,calorie consumption and current time. Easy view of the maximum speed,average speed ,total riding time, total riding distance and rotations per miunte of the wheel. Real-time indication of acceleration or deceleration for easy control of your speed Options of 12h/24h systems,stopwatch feature and alert feature for bicycle maintenance. Length unit options of klometer/mile.Modern look, waterproof and portable.