WEST BIKING Large Digital Bicycle Bike Computer Wireless Speedometer Odometer Stopwatch WLS Waterproof Backlight Bike ComputerNote: The trigger speed can't be too fast. If it is too fast, the internal CPU will not react. The area of the finger and the touch point is also as large as possible when touched.Auto Wake-up & Large LCD Display:Automatically wakes from sleep mode upon sensing vibration in the bicycle. 2.5 Inch bright LCD display with big numbers guarantees you can read your statistics easily, more safe and convenient while cycling.Multi-Functions:This bicycle computer measures speed, distance, and riding time, temperature etc. Exactly what any serious bicyclist or fitness fanatic needs to know for stats tracking.Wireless And Waterproof Design:Wireless and waterproof design makes it more convenient and durable. Never worried about the complex in install the wires on your handlebars,waterproof- design no need to worry about rain, just wipe it dry when cycling or finish your journey.White Backlight And Easy Installation:Provides backlight for easy viewing during dark hours. Easy to install by following the guidance steps provided in paper manual.Wide Application:Suitable for most types of bicycles: mountain bikes, road bikes, electronic bikes, folding bikes, ordinary bikes.