Nightstick Adjustable Beam Headlamp USB Rechargeable The 4708B USB rechargeable adjustable beam headlamp is 1,000 lumens of powerful LED light. With a waterproof aircraft-grade 6061-T6 aluminum housing, this sleek headlamp is as durable as it is convenient. Use the low-profile ratchet tilt head to place light where needed while adjusting between 4 lighting modes (High/Med/Low/Strobe). Charging takes place inside of the light, so the built-in waterproof micro-USB port has a small battery voltage monitor with a RED/GREEN LED charging indicator for easy reference. Also included is a 2 foot USB to micro-USB cord along with lithium-ion rechargeable battery. Features: LED technology 3 brightness levels plus strobe Aircraft-grade 6061-T6 aluminum housing w/Type III hard anodized finish Single switch located on side of the light Adjustable ratchet tilt head Adjustable elastic head strap IP-X7 Waterproof Chemical, Heat and Impact resistant 2' Male USB (Type A) to Male Micro-USB (Type B) Cable (included) Powered by a rechargeable Li-ion battery (included) Limited Lifetime Warranty