1. 27 Multi Functions This bicycle speedometer offers up to 27 functions including auto sleep/wake, current speed, max speed, average speed, total distance, trip distance, riding time, stopwatch, calorie consumption, temperature, and clock. It provides a comprehensive tracking experience for cyclists. 2. Easy Installation and Use Installing this speedometer is quick and easy, taking only a few minutes. The wired design and lightweight construction make it compatible with most bicycle types. It is also suitable for accurate stats tracking, supporting various tire sizes. 3. Durable and Waterproof Made of quality materials, this speedometer is built to last. Its ABS construction ensures durability and its waterproof feature allows for use in different weather conditions. 4. Clear Display and Intelligent Backlight The large LCD screen provides clear visibility, and the light control intelligent backlight ensures easy reading in lowlight conditions. The backlight has a long bright function, enhancing visibility during night rides.