Feature: 1. Multi function: Including clock, EL backlight, average speed, cycling time, total distance total mileage, stopwatch, cycling speed, maximum speed, cycling distance, automatic on off and other 11 functions. 2. Wired bicycle speedometer with LCD display, monitor your bike s speed, distance, and ride time. 3. Wireless receiver equipment, stable transmission, sensitive recording, more convenient driving. 4. Anti signal interference, easy to read large screen LCD display. 5. Small size and lightweight, easy to install, the installation attachment is firm. 6. Waterproof, suitable for outdoor cycling in rainy days, recording accurate data. 7. Great for training, hiking, rock climbing, horse riding and other outdoor activities. 8. Speed: current speed, odometer, DST: driving distance, maximum speed, average speed, total travel time, TM: travel time, clock (12 hours 24 hours), SW:second chronograph, temperature, TM descent travel time decreased, descent distance, maintain the alarm, speeding remind, set type perimeter, low battery indicator, separate buttons, auto: on off. Specification: Condition: 100percent Brand New Item Type: Luminous Bicycle Computer Material: PVC Color: Black Options: Wired, Wireless Waterproof: Yes Application: All Bikes Position: Horizontal Handlebar, Vertical Handlebar Wired Battery: CR2032*1 (Contain) Wireless Battery: CR2032*2 (Contain) Size: Approx. 6x4cm 2.36x1.57inch . Package List: 1 x Bicycle Computer1 x Manual7 x Ribbon2 x Gasket1 x Accessory1 x Soft Magnet