1Mountain bike speedometer, with LCD display, high brightness, you can easily view ride statistics. 2Small in size, light in weight, good waterproof performance, suitable for outdoor installation. 3It can measure the riding speed, distance and riding time, suitable for riding enthusiasts or fitness experts. 4The interface is simple and easy to navigate, with only two buttons to access all measured values. 5The most common tire size can be customized for accurate statistical information tracking. 6Suitable for ordinary bicycles such as road bicycles, mountain bicycles, and folding bicycles. 7With automatic wake‑up function, it will automatically wake up from sleep mode when it senses the vibration of the bicycle.