The Double Clutch USB Headlamp is a dual-power, dual-function, dual-output headlamp that gives you the flexibility of using either a USB rechargeable battery or three AAA alkaline batteries. It has mutiple modes high/low/spotlight/floodlight. It's lightweight and long-running with a 60 degree tilting head. The tough polycarbonate construction features polycarbonate lens, face cap on/off twists and C4 LED bulb. Included is a USB cord, adjustable elastic and hard hat straps.