The Velo Wireless+ now packs even more punch with a programmable odometer, menu screen and backlight with night mode. Installs easily on almost any bike, including 27.5 and 29'ers. Functions Current / average / maximum speed Trip distance Total distance Moving time Clock Calorie consumption Features Analog wireless Pace arrow Simple tire size Auto start / stop Programmable odometer Menu screen to change settings Low battery indicator Backlight with Night Mode Zip tie bracket Current speed: 0.0(4.0)~105.9 km/h [0.0 (3.0) - 65.9 mph] Moving time: 0:00'00"~9:59'59" Trip distance: 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 Backlight: Yes [with Night Mode] Odometer manual se: 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