CatEye Sport OptiCube HeadlightIncludes 3 white LEDs and OptiCube lens technology for a wider, 20 lumen beam with excellent visibilityFeatures 2 light modes - constant or flashingIncludes FlexTight H-34N bracket for versatile and secure mountingApproximately 80 hours run time on constant modeApproximately 320 hours run time on flashing modeBattery: 2, AA Battery Alkaline, 1.5(V), 1.8(Wh), 24g, IncludedItem SpecificationsBatteryLi IonColorBlackLumens Front135Recharge TypeUSBWeight94 CatEye HL-EL135 Headlight Headlight UPC: 725012021323