Ultra-compact, extremely light weight, high-performance C4 LED headlamp features the latest in C4 LED technology and lithium batteries for a combined performance at the top of the headlamp category. New C4® LED technology produces 2 to 3 times the output of previous LEDs. The Argo® HP LED headlamp has been specifically engineered to minimize weight and maximize run time. The LED headlamp's optimized center of gravity provides maximum wearer comfort and stability during use. This headlamp offers high and low lighting modes and is packaged with an elastic head strap and a rubber hard hat strap.