WEST BIKING YP0702100 3.4-inch Large Screen Speedometer Sensor APP Connect Cycling Code Meter for Bicycle,MTB,Road Bike •3.4-Inch Large Screen: Clearer data display and better visual effects •Extension bracket design: Greatly improve the handlebar space •Can Be Used with nRF Toolbox App: It is more convenient to read riding data •Touch to Turn on or off The Backlight: The USB charging interface takes about 3 hours to fully charge at once to meet daily cycling needs •Low Battery Reminder: When the battery symbol appears at the left end of the middle part of the display,please charge the computer as soon as possible •IPX64 Water-Proof and Dust-Proof: The built-in waterproof rubber ring can effectively prevent water penetration,and it can work normally regardless of heavy rain or fog •Specifications: •Product Name: Large Screen Speedometer •Screen size: 3.4-Inch •Weight: About 200g •Material: ABS •Battery Capacity: 1000mAh •Charging Time: 3 Hours •Waterproof: Daily IPX64 Waterproof Package included: •1 x Speedometer •1 x Cable •2 x Bracket •1 x Ring •1 x English and Chinese Manual •Other items not included