This product is the perfect assistant for your cycling training. It is multi-functional, including total mileage, single mileage, maximum speed, average speed, cycling time, temperature, stopwatch, calories, fat consumption, estimated time of arrival, cycle display, time display. Functions: Bicycle odometer with LCD backlight. Portable, durable and convenient. Easy-to-read LCD display with a large screen. Easy to operate, the perfect bike companion. Easy to install with mounting accessories. Perfect for use while hiking, climbing, horseback riding and other outdoor activities. The perfect assistant for your cycling training. The time display function can also be used as a great travel gadget. Multi-function: total mileage, single mileage, maximum speed, average speed, cycling time, temperature, stopwatch, calories, fat consumption, estimated time of arrival, cycle display, time display. Technical data: Body color: black Backlight: blue light Screen size: 2.8 inch Power supply: CR2023, 3V 210mAh battery (included) Item Size: 80 * 54 * 18.6mm / 3.1 * 2.1 * 0.7in Product weight: 130 g / 4.6 oz Package size: 158 * 82 * 43mm / 6.2 * 3.2 * 1.7in Package weight: 150g / 5.3oz Package list: 1 * Odometer 1 * Bracket 1 * User Manual 1 * Transmitter