The Cateye Velo Wireless Computer packs a punch with a programmable odometer and menu screen. It installs easily on almost any bike, including 27.5 and 29’ers. Computer functions: Current/ average/ maximum speed, trip distance, total distance, elapsed time, clock, calorie consumption Analog wireless computer Pace arrow Simple tire size Auto start / stop Programmable odometer Menu screen to change setting Includes zip tie bracket Battery: 1, CR2032 Lithium Metal, 3(V), 0.735(Wh), 0.3g, Included Rechargeable Battery: No Color: Black WIFI: No Color Screen: No Cadence: No GPS Enabled: No Touchscreen: No Heart Rate: No ANT Compatibility: No Wireless: Yes Bluetooth Compatibility: No Current speed: 0.0(4.0) 105.9 km/h [0.0 (3.0) - 65.9 mph] Elapsed time: 0:00'00" 9:59'59" Trip distance 1: 0.00 999.99 km [mile] Average speed: 0.0 105.9 km/h [0.0 - 65.9 mph] Maximum speed: 0.0(4.0) 105.9 km/h [0.0(3.0) - 65.9 mph] Calorie consumption: 0-99999 kcal Total distance (Odometer): 0-99999 km [mile] Clock: 0:00-23:59 [1:00-12:59] Pace arrow: Yes Wireless transmission: Speed [Analog sensor] Auto power saving: Yes Auto start/stop: Yes Odometer manual set: Yes Tire size: 26", 700c, 27", 27.5", 29", 16", 18", 20", 22", 24" or 100cm〜299cm (default:26") Battery: Computer: CR2032 x1 Sensor: CR2032 x1 Battery life: Computer = approx 1 year (1hr use per day), Sensor = approx 10,000 km [6,250 miles] in total distance Dimension: 55.5 X 37.0 X 16.5 mm Weight: approx 26.4 g Water resistant: IPX8