Features1Display Range: Wired cycling computer can display real time speed, mileage, car time, travel time, calories consumed, current time. 2Noctilucent 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. 3Two Conversion Units: Metric and inch units are available, which are suitable for the hobbies of different users at home and abroad. 4Low 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. 5Fashionable Appearance: Waterproof bike speedometer adopts fashionable appearance design, waterproof, portable, easy to disassemble, convenient for your use.SpecificationItem Type: Bike ComputerMaterial:ABSProduct Style: 813Battery Type: One CR2032 Button Battery (Ship with Inbuilt Battery)Battery Capacity: 210mahPackage List1 x Bike Computer7 x Straps1 x Connecting Cable1 x Patch1 x Accessories1 x Chinese English User Manual