... ,High lumen 4,High stability CREE Waterproof 3 bike led light Features:1, LED Chip: CREE High Power LED2, Integrated digital circuit board ... rain7, Material: T6061 aviation aluminum alloy, all-metal manufacturing8, Surface: Army Regulation oxidation color: Asian black9, 4x18650 battery capacity: 4400mAh10, Voltage ... on one's head by headband CREE Waterproof 3 bike led light