Bicycle Computers features: Waterproof Bike Computer With Lcd Digital Display Bicycle Odometer Speedometer Cycling Wired Stopwatch Riding Accessories Color: we send based on the color or size of the main image of the product page. Quantity：we send based on quantity on title, if there is no quantity in the title, we send based on description. Describe This waterproof riding LCD odometer adopts LCD screen design for clear display. The waterproof bicycle computer has a sleep mode. If there is no signal input for 300 seconds, it will enter the standby mode. The odometer is waterproof and can be used even in rainy days. The bicycle speedometer is easy to install and use, and can be used for a variety of bicycles. The cycling computer can display information such as speed and distance. Specification: Material: ABS. Colour: Black. Battery: 1x AG10 button battery. (Not included) Notes Due to different computer resolutions, there may be some color distortions. Due to different hand measurements, there may be slight errors. Package includes: 1x bicycle computer. (Not including battery) 1x sensor + base. 1 accessory.