Feature: 1. Display Range: Wired cycling computer can display real time speed, mileage, car time, travel time, calories consumed, current time. 2. Noctilucent Function: The Bike odometer has a luminous function, and uses a high brightness light source to make it clear at a glance when you search for information at night. 3. Two Conversion Units: Metric and inch units are available, which are suitable for the hobbies of different users at home and abroad. 4. Low Battery Indicator: The low battery indicator allows you to keep abreast of the working conditions of the computer at any time, and has an overspeed reminder function to make your driving safer. 5. Fashionable Appearance: Waterproof bike speedometer adopts fashionable appearance design, waterproof, portable, easy to disassemble, convenient for your use. Specification: Item Type: Bike Computer Material:ABS Product Style: 813 Battery Type: One CR2032 Button Battery (Ship with Inbuilt Battery) Battery Capacity: 210mah. Package List: 1 x Bike Computer7 x Straps1 x Connecting Cable1 x Patch1 x Accessories1 x Chinese English User Manual Note: Life grade waterproof, please do not immerse in water for a long time