This wireless bike computer records your riding data and has many more functions. It is compact and lightweight, perfect gift for cyclist. Features: Monitors the riding data, including current speed, average speed, maximum speed, riding time, trip distance, and ODO meter. More functions: Stopwatch, 12/24 hour format, metric/imperial unit, auto on/off. Large LCD display with LED backlight allows you to read the data easily and clearly in darkness. 2 smart buttons for easy operation. Small size, lightweight and wireless design makes it a convenient choice for cyclist. Functions: Clock: 12/24 hour format Stopwatch Metric/imperial alternative Auto ON/OFF Current speed Average speed Max. speed Riding time Trip distance ODO meter LED backlight Specifications: Size: Approx. 7 * 4.5 * 1.3cm / 2.8 * 1.8 * 0.5in Weight: 33g / 1.2oz Package Size: Approx. 15.5 * 8 * 4.5cm / 6.1 * 3.1 * 1.8in Package Weight: Approx. 88g / 3.1oz Package List: 1 * Bike Computer 1 * Sensor 4 * Zip Tie 1 * Rubber Ring 1 * Computer Bracket 2 * Soft Rubber Slice 1 * Magnet 1 * User Manual