The Streamlight Double Clutch USB is a dual-power headlamp that provides 125 lumens on high and 30 lumens on low. It offers the flexibility of using either a USB rechargeable battery or three AAA alkaline batteries. It features spotlight and floodlight modes with a 60-degree tilting head for precise light placement. Black Polycarbonate construction, OAL 1.60, Head Diameter 1.75, Weight 4.00 oz, Impact / Water Resistant, modes High / Low / Flood / Spot. Included is a USB cord, adjustable elastic head strap, and hard hat strap. The tough polycarbonate housing and rotating head switch ensure reliable operation and durability with a maximum beam distance of 82 meters.