Description: This bicycle speedometer is made of plastic material, with fine craftsmanship, light weight, portable, durable, waterproof, high and low temperature resistance. The screen is illuminated, clearly showing the time, average speed, maximum speed, distance, etc. It is easy to install on your bicycles and motorcycles and is very suitable for cycling enthusiasts. Features: Waterproof Bicycle Speedometer -Color: Black. -Material: Plastic. -Size: 4.4x6 cm/1.73x2.36 inch. Weight: 90g. Notice: 1. Size in 1-2cm size difference is in normal range due to manual measurement. (1 inch = 2.54 cm) 2. Color may have a little difference due to lights, screens, etc. Package Including 1 * Odometer 1 * Wireless Base 1 * Wireless Base Sensor 1 * Magnet 2 * Adhesive Stickers 5 * Straps 1 * User Manual