Product Name: Multifunctional Headlight Battery model: 18650 high capacity lithium battery(Without battery, self provided) Material: high-density aluminum alloy Lighting gear: strong light - weak light - burst flash Charging method: USB direct charging Range: approximately 4 to 16 hours Waterproof grade: domestic waterproof Specifications: Three modes and adjustable focal length - the brightest headlight flashlight, with three modes: strong light, weak light, and burst (long press), combined with adjustable 90 anddeg rotating headlights, making this headlight the ideal choice for any use. USB rechargeable headlights are long-lasting and durable. The power bank - rechargeable headlights have high brightness, and this USB rechargeable headlight can operate for up to 12 hours. The USB input port allows you to quickly charge the headlights, while the USB output port helps this LED headlight function as a power bank to charge phones, cameras, and more. Comfortable, lightweight, and waterproof - this headband weighs only 240G (excluding batteries) and comes with an adjustable headband that is flexible and easy to adjust to fit your head circumference, providing the best comfort for your head as a safety helmet light or heavy-duty work, making it the best headlight for adults. It is the best front mirror to wear when running, cycling, camping, mountaineering, building, car repair, etc. Package Included: 1 x searchlight 1 x Charging cable