ULTRA-LIGHT COMFORTABLE: The headlamp is super light (only 50g) and compact (55 * 32 * 35 mm), so you feel no pressure on your head. The breathable and adjustable elastic headband fits perfectly for adults and children and keeps the lamp comfortable and stable on your head, even when you are running. SUPER BRIGHT ADJUSTABLE ANGLE: 160 lumens brightness provides visibility up to 60 meters. It can adjust the lighting area to be enlarged compared to other lamps, providing excellent brightness for all nocturnal activities. The beam angle of the headlamp can be adjusted up to 60 degrees with a simple up or down movement, allowing you to illuminate wherever you need it. USB RECHARGEABLE: With a built-in rechargeable 800mAh lithium battery, powerful headlamps provide a burn time of up to 12 hours (at low brightness) or up to 5 hours (at high brightness). Full charging via the USB port (USB cable included) takes only 2 hours. The lifespan of LED lamps is more than 100,000 hours, you don't have to worry about replacing it. IPX4 WATERPROOF: The waterproof headlamp is suitable for indoor and outdoor use, regardless of the weather, whether it's raining or snowing. So you can use it for night reading, dog walking, night fishing, hunting, jogging, cycling, camping, hiking, caving, DIY, night repairs or even in an emergency at home or at work.