Auto Wake Up FunctionAutomatically wakes up from sleep mode when it senses a vibration of the bike. Bright LCD display for easy viewing of cycling statistics. Multi-functionSmall size, light weight, wireless and waterproof design makes it convenient and durable. This bike computer can measure speed, distance and ride time. Just the stats any serious cyclist or fitness enthusiast needs to know. Day and Night BacklightingProvides backlighting for easy viewing during dark hours. The backlight turns on automatically when any button is pressed between 18:00 and 06:00. Please note that the slight ringing sound from the unit is normal and is a result of the design of the wireless automatic function. Easy to install and use] Simple installation, only takes a few minutes. Easy to navigate interface with only two buttons to access all measurements. Customisable to the most common tyre sizes for accurate statistical tracking. Scope of ApplicationRoad bikes, mountain bikes, folding bikes and other common bikes are compatible with this bike computer. This bike computer may not be compatible with some electric assist bikes. If the computer display, sensors and magnets can be mounted within the specified distance, the device should be fully compatible. If you have any questions, please do not hesitate to contact us.