Rechargeable Headlamp Fully charge with 2 x 18650 batteries from any USB port in just 4 hours and provide up to 30 hours of constant light on a single charge. Mini USB cable is included, this headlamp can only be used and charged when it contains batteries. 3 adjustable modes Top LED chip can up to 800LM, Strong/Weak/Flash for long range vision and sustainable use. A great personal lighting system for fishing, cycling, climbing, mountain biking, camping and so on Zoomable Light dispersion is also adjustable to either a focused spot or a flat surface. larger lighting Comfortable to wear plastic parts with pad sponge make parts next to your head soft, let you wear, Small size and light weight, it is easy to take Lamp adjustable The lamp is adjustable from side to side and height. The inclination of the lamp is adjustable by 90 . Easy to install and place on the head, one button to control multiple different light modes, make life easier and safer, Perfect gift for family or friends