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.Battery: 1, CR2032 Lithium Metal, 3(V), 0.735(Wh), 0.3g, IncludedComputer functions: Current/ average/ maximum speed, trip distance, total distance, elapsed time, clock, calorie consumptionAnalog wireless computerPace arrowSimple tire sizeAuto start / stopProgrammable odometerMenu screen to change settingIncludes zip tie bracketItem SpecificationsANT CompatibilityNoBluetooth CompatibilityNoCadenceNoColor ScreenNoColorBlackGPS EnabledNoHeart RateNoRechargeable BatteryNoTouchscreenNoWIFINoWirelessYes CatEye Velo Wireless Bike Computer Bike Computers EAN: 4990173038237