Indicates real-time acceleration or deceleration for better control of your speed Displays real-time current speed, traveled distance, riding time, trip time & calorie consumption Big LCD monitor enables you to review the maximum speed, average speed, travelled distance & rotations per minute of wheel Special features include a stopwatch function & bicycle maintenance alert function Supports 12/24h systems & length unit options of kilometer/mileMultiple purposes for bicycles/motor-bicycles(3"-30") Modern design, small & lightweight, looks professional on any bike Waterproof & portable package contents: 1 x Bicycle LCD Odometer Speedometer Calorie Calculator 1 x Mounting Shoe (Sensor) 1 x Wheel Magnet 1 x User"s Manual