... Integrated digital circuit board control3, Three lighting modes: (1) High brightness lighting (2) Low brightness lighting (3) Flashing4, ... aluminum alloy, all-metal manufacturing8, Surface: Army Regulation oxidation color: Asian black9, 4x18650 battery capacity: 4400mAh10, Voltage: 8. ... , fixed on bicycle2, Worn on one's head by headband high brightness led bicycle light and head light with cree chip ...