Features:  Wireless cycling computer that can display rich data during training, such as mileage, speed, temperature, stopwatch, calories, time, etc.  2.7-inch high clear digital screen, large font display, easy to view. With LED backlight, it is clear even at night or in low light.  Built-in button battery, supports automatic sleep when parking and automatic wake-up when riding, saves energy and prolongs battery working time.  High-quality ABS material, with nice durability, strong and high temperature resistant. Waterproof design, can be used normally even on rainy days.  Easy to install, wireless design saves time and effort. It comes with a mounting bracket to make the angle more comfortable and improve riding safety.    Specifications:  Color: Black/ White+Red/ Black+Red(optional)  Material: ABS  Screen: 2.7 Inch  Battery: 1 * CR2032(3V/240mAh)  IP Rate: IPX4  Item Size: 78 * 53 * 18mm/ 3.1 * 2.1 * 0.7in  Item Weight: 51g/ 1.8oz  Package Size: 158 * 82 * 43mm/ 6.2 * 3.2 * 1.7in  Package Weight: 145g/ 5.1oz    Packing List:  1 * Bike Computer  1 * Wireless Transmitters  1 * Base Bracket  1 * Extension Bracket  1 * Extension Bracket Plastics Nut  1 * Base Bracket Gasket  1 * Transmitters Adhesive  1 * Magnets  4 * Nylon Cable Ties  1 * Manual  1 * Installation Guide