ULTRA-LIGHT & COMFORTABLE: The headlamp is super light (only 45g) and compact (2.4*1.2*1.3 inches), allowing you to feel no pressure when wearing your head. Breathable and adjustable elastic headband is perfect for adults and children, keeps the headlamp comfortable and stable on your head, even while running. SUPER SHINY & ADJUSTABLE ANGLE: 200 lumens brightness provides visibility up to 100 meters. It can enlarge the lighting area compared with other lamp beads, providing excellent brightness for any night activity. The headlight's beam angle can be adjusted up to 60 degrees with an easy up or down motion, allowing you to illuminate where you need it. USB RECHARGEABLE : With a built-in 800mAh rechargeable lithium battery, this powerful headlamp provides illumination time of up to 12 hours (at low brightness setting) or up to 5 hours (at high brightness setting). It only takes 2 hours to be fully charged via USB port (USB Cable Included). LED lamp life is over 100,000 hours, no worry about replacement. 5 LIGHTING MODES & MEMORY FUNCTION: Equipped with 5 lighting modes - WHITE BEAM: high, medium, low; RED BEAM: Steady, SOS in emergency. Remember the last light mode used, you don't have to cycle through other light modes. When the light is on in a specific mode for more than 4 seconds, the smart timer function allows you to turn off the light with just one press of the button. WATERPROOF IPX4: Headlamp waterproof is suitable for indoors and outdoors, no matter what the weather is raining or snowing. So you can use it for night reading, dog walking, night fishing, hunting, jogging, cycling, camping, hiking, caving, DIY, night repair or even in emergency at home or at work.