Compact, extremely light weight, high performance USB rechargeable LED headlamp. Offers "Dual Fuel" technology, one handed glove-friendly facecap rotation to operate the light and spot or flood beam and high or low lighting modes. Lithium Polymer battery charges inside or outside of the headlamp or three AAA sized batteries can be used. Yellow engineering polymer case. Unbreakable Polycarbonate lens, sealed. White C4 LED technology, impervious to shock with a 50,000 hour lifetime. Light output: 125 lumens on high, 30 lumens on low. 1.75 inch fasecap diameter, 2.50 inch width, 1.66 inch depth. Includes elastic head strap, rubber helmet strap and USB charge cord.