Brand Name: West Biking Battery Type: Others High-concerned chemical: none Origin: Mainland China Navigation: N Touch Screen: Y Waterproof Level: IPX6 Automatic sleep: Y External devices: N auto-pause: N Language: English Model Number: YP0702029 Display Size: 2.8 Certification: CE Stopwatch and Accessories: Waterproof Stopwatch Type: WireLess Bike Computer Function: 20 Functions Please See Detail Style: Wired and Wireless Application: MTB Road Bike and Fixed Bike Size: About 75mm x 50mm x 13mm Fit Position: Bicycle Handlebar PowerSupply: 2032 Button Cell Feature: Rainproof Waterproof Choice: yes semi_Choice: yes