As a bike computer, measuring / average / , trip distance / , calories and other real-time riding data. Quickly and accurately get the data you need! Suitable for most types of bicycles.Perfect to use when hiking, climbing, riding and other outdoor actives. Suitable for most types of bicycles, such as mountain bikes, folding bicycles, ordinary bicycles, dirt bicycles, stationary bikes and so on. Features - Color: Black. - Material: Plastic+LCD+Electronic Component. - Size: 8 x 5.4 x 0.86 cm. - Dimensions: 2.8 inch - Waterproof and Main Functions: speed, clock, Average Speed, Odometer, Maximum speed. - Multifunction: Small size, light weight,waterproof design makes it Portable, durable, comfortable and convenient. This computer measures speed, distance, and riding time.Ideal assistant for training. - Applicable: Road bicycles, mountain bikes, folding bikes,and other common bicycles are compatible with this computer. Suitable for most types of bicycles.Perfect to use when hiking, climbing, riding and other outdoor actives. - Day and Night Use: Provides backlight for easy viewing during .Perfect for daily Use. Dear buyer, Due to lighting effect,monitor's brightness,manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you! Package list: 1 x Tachometer