High-strength aerospace aluminum body, Mil-Spec hard anodized for extreme durability Virtually indestructible, ultra-high-output LED emitter regulated to maximize output and runtime Two output levels — high for maximum light, low for extended runtime Precision reflector creates smooth, optimized beam with plenty of reach and enough surround light for peripheral vision Coated tempered window resists impact, maximizes light transmission Dual-output tailcap switch—press for momentary-on low, click for constant-on low,return to off and then press or click again for high Tailcap switch locks out to prevent activation during transport or storage Weatherproof O-ring and gasket sealing