Oxking Dp Led-760 18650 Battery Cree T6 Portable Bike Led with Ac Charger Rechargeable Waterproof LED Headlamp 3w Headlight Torch Flashlight for Camping Hiking Hunting Free Drop Shipping Color Black Output bright can come to max 100-300 lumens [lm], Internal wiring applies the high efficient booster circuit, working voltage is wide and can utilize the batteries in the largest extent Waterproofing design Waterproofing design, ABS casing Adjustable base is provided for each head lamp, with back and forth inclination, 1 switch Mode: high Power by: 18650 battery (4800 mah, include battery) strong brightness and protable