Description [Ultra-light and comfortable]: The headlight is ultra-light (only 60g) and compact (58 * 29 * 32 inches MM), allowing you to wear it without pressure on your your head. Breathable and adjustable elastic headband is perfect for adults and children, and it can keep the headlights comfortable and stable even when running. [Super Bright & Adjustable Angle]: 100 lumens of brightness provides up to at 60 meters visibility. Compared with other lamp beads, it can expand the lighting area and provide excellent brightness for all night activities. The beam angle of the headlights can be adjusted 60 degrees, easily move up and down, allowing you to shine light where you need it. [USB Rechargeable]: This headlamp powerful has a built-in 800mAh rechargeable lithium battery, which can provide up to 12 hours (low brightness setting) or up to 5 hours (high brightness setting). It only takes 2 hours to fully charge via USB port (USB cable included). The lifespan of the LED lamp is over 100,000 hours, so it is hassle-free to replace. [5 Lighting Modes & Memory Function]: Equipped with 5 lighting modes: white light: high, medium and low; RED BEAM: stable, SOS in emergency. Remember the last light mode used, you don't need to cycle through other light modes. When the light is on for more than 4 seconds in a specific mode, the smart timer function allows you to turn off the light with just one button. [IPX4 Waterproof]: Waterproof headlamps are suitable for indoor and outdoor use, regardless of rain or snow. Therefore, you can use it for night reading, dog walking, night fishing, hunting, jogging, cycling, camping, hiking, caving, DIY, night maintenance and even the emergencies at home or at work.