3 Adjustable light output: 5 LED, 17 LED and 60 LED lighting. The brightness can meet different lighting needs. Powered by USB cable and one 18650 battery is included. Or the lamp can also be powered by 3 * AAA batteries (not included). Flexible Hook: Easily hang or carry around. You can light up anywhere with the lamp. Light and Compact: ABS plastic, light and compact. The lamp can also save the energy for long working hours. Outdoor or indoor use --- Suitable for camping, hiking, assembly, hunting, fishing, car repairs and other outdoor activities or emergencies. Specification Adjustable light output: 5 LED, 17 LED and 60 LED lighting Power supply: 1x 18650 3.7V Li-ion battery (included) or 3x AAA Battery (not included) Diameter: 115mm Thickness: 55mm Package includes: 1* 60 LED lamp 1* USB cable 1* AAA battery holder 1* tick