CatEye CC-VT240W Urban Wireless Computer The CC-VT240W is a compact, stylish wireless computer that's packed with features. Track your current speed, average speed, maximum speed and trip distance with ease. Data like calorie consumption and total distance give you the ability to track the benefits of your progress. The computer includes automatic settings such as power save mode and auto start/stop. The expected battery life is 1 year (if used for 1 hour per day) on average. Cateye also designed it to work with new larger tire sizes. With a streamline design, and access all your riding data, the CC-VT240W is an affordable necessity for all your cycling needs. Features Battery type: CR2032 Dimensions: 55.5 x 37 x 16.5mm Weight: 26.4g Compatible with 16" to 29" tires