AGPtek&reg; Bike Bicycle Multifunctional LCD Digital Odometer Speedometer Velometer Backlight 28 main functions. Display: Two-line four windows displays. Blue back-light, Stopwatch function. Easy installation, good durability. Dimensions: 8.5cm x 4.8cm x 1.5cm. Powered by CR2032 battery. Package size: 15.5 x 14.5 x 3cm. Package weight: 150g. Packing Include: 1 x LCD bicycle computer, 1 x Transmitter sensor, 1 x Mounting shoe, 1 x Magnet, 1 x Bracket, 4 x Cable ties, 1 x CR2032 battery, 1 x User Manual