About CatEye Velo-Wireless+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. FunctionsCurrent / average / maximum speed Trip distance Total distance Elapsed time Clock Calorie consumption FeaturesAnalog wireless Pace arrow Simple tire size Auto start / stop Programmable odometer Menu screen to change setting Battery indicator Backlight with Night Mode Zip tie bracket Tech SpecsCurrent 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]Trip distance 2:0.0~105.9 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 kcalTotal distance (Odometer):0~99999 km [mile]Clock:0:00~23:59 [1:00~12:59]Pace arrow:YesWireless transmission:Speed [Analog sensor]Auto power saving:YesAuto start/stop:YesBacklight:Yes [with Night Mode]Odometer manual se:YesTire size:26", 700c, 27", 27.5", 29", 16", 18", 20", 22", 24" or 100cm〜299cm (default:26")Battery:Computer: CR2032 x1 Sensor: CR2032 x1Battery 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 mmWeight:approx 26.4 g About CatEyeCatEye is the leading manufacturer of cycle computers, lights and reflectors to cyclists in the world. Founded in 1954 in Osaka, Japan, CatEye has always been a leader in innovation and technology.