The HL Series has gone hands free! When your task requires both hands and a bright light with a wide flood beam, reach for the ProTac HL Headlamp. With 540-lumens of blinding light that reaches 172-meters, the ProTac HL Headlamp is the brightest addition to the headlamp series providing 500-lumens on high. It offers the latest in power LED technology, impervious to shock with a 50,000-hour lifetime. The multi-function, push-button Ten-Tap programmable switch allows the user to select one of three different programs. LED Solid State Power Regulation provides maximum light output throughout battery life. The housing is crafted from 6000 series machined aircraft aluminum with an anodized finish. Built for durability, the ProTac HL Headlamp features a gasket sealed glass lens, is IPX4 rated for water resistant operation, and 1-meter impact resistance tested. Packaged with an elastic headband and a rubber headband for helmet mounting. Serialized for positive identification. Powered by 2 3-Volt CR123A lithium batteries with a shelf life of 10-years. Dimensions: 1.20-Inch face cap diameter, 3.66-Inch wide, and 2.60-Inch maximum depth (including headband mounting plate). Weighs 6.6-Ounces with batteries (included with purchase)..