Material: Plastic Color: Black Body and Red Buttons Imported sensors helps to track cycling performance and speed accurately Indicates real-time acceleration or deceleration for better control of your speed Displays real-time current speed, traveled distance, riding time and trip time Big LCD monitor enables you to review the maximum speed, average speed, travelled distance and rotations per minute of wheel Special features include a stopwatch function and bicycle maintenance alert function Supports 12/24h systems and length unit options of kilometer/mile Multiple purposes for bicycles/motor-bicycles(3"-30") Modern design, small and lightweight, looks professional on any bike Waterproof and portable