Compact, extremely light weight, high performance USB rechargeable LED headlamp. The. . Double Clutch™ USB headlamp offers "Dual Fuel" technology and one handed “glove-friendly”. . facecap rotation to operate the light. The headlamp additionally offers spot or flood beam and. . high or low lighting modes. The Lithium Polymer battery charges inside or outside of the. . headlamp or three AAA sized batteries can be used for disposable power. The Double Clutch™. . USB headlamp has been specifically engineered to maximize run time and minimize weight with a. . low profile design and an optimized center of gravity providing maximum wearer comfort and. . stability during use. The headlamp is packaged with an elastic head strap, rubber helmet strap. . and USB charge cord. Models available with power adapters.