Streamlight ProTac HL Headlamp

6000 series machined aircraft aluminum with anodized finish. Gasket sealed glass lens Dimensions/Weight: Facecap Diameter: 1.20 in. (3.05 cm) Width: 3.66 in. (2.54 cm); Maximum Depth (including headband mounting plate): 2.60 in. (6.60 cm) 6.6 oz (187 grams) with batteries Light Source: C4® LED technology, impervious to shock with a 50,000 hour lifetime Three lighting modes: - High for super-bright light with good beam distance: 635 lumens, 8,500 candela; 184m beam distance; runs 1.75 hours - Medium for bright light and longer run time: 105 lumens, 1,450 candela; 76m beam distance; runs 8 hours - Low for extended run time and when a less intense beam is ideal: 20 lumens; 280 candela; 33m beam distance; runs 36 hours Solid State power regulation provides maximum light output throughout battery life On/Off: TEN-TAP® Programmable switch allows user selection of one of three different programs: 1.) High /medium/low (factory default); 2.) High only; 3.) Low/medium/high Battery: Uses two 3V CR123A lithium batteries (included) Features: 90 degree tilting head IPX4 water-resistant 1 meter impact resistance tested Includes rubber helmet strap (installed) and adjustable elastic headstrap TEN-TAP programmable switch allows user to select one of three different programs RoHS compliant Approvals: Most models meet applicable European Community Directives