[Auto Wake-Up Function]Automatically wakes up from standby mode when bicycle vibration is detected. The bright LCD display allows for easy viewing of riding statistics. [Multi-Functional]Compact, , wireless, and waterproof design for convenient and use. This bicycle computer measures speed, distance, and riding time. It offers the statistical features every cycling enthusiast or fitness enthusiast needs. [Easy to Install and Use]Installation is simple and can be completed in just a few minutes. The intuitive interface allows access to all measurement data with just two buttons. Supports customization of common tire sizes to the accuracy of statistics. [Day and Night Backlight Function]Features a backlight function for easy viewing of data in dark environments. The backlight automatically turns on between 6:00 PM and 7:00 AM. Pressing any button illuminate the backlight for 5 seconds. Holding down the "Mode" button turn the backlight on or off. [Application Scope]Suitable for road bikes, mountain bikes, folding bikes, and other common bicycle types. This bike computer may not be compatible with certain electric assist bicycles. If the computer display, sensors, and magnets can be installed within the specified distance, the device should be fully compatible. Color: Black Material: plastic Package Contents: 1 * Bicycle speedometer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.