The HL55 LED headlamp from Fenix weighs in at just four ounces and offers an optimum output-to-weight ratio, the HL55 is great for those long adventures where hands-free illumination is needed. The HL55 is made from aircraft aluminum with a premium Type III hard-anodized finish, so it can withstand several impacts and harsh weather. The all metal housing is designed to dissipate heat allowing for a nice cool experience. You can adjust the beam where needed by tilting the headlamp up to 160°. The headlamp can also be removed from the strap, and used as a regular flashlight, allowing for additional light positioning options not possible with other headlamps. SELECT FEATURES: --160 degree tilt mechanism --Instant burst mode --All metal housing to shed heat and impacts --Enhanced heat dissipation --Over heat protection to avoid high-temperatures on the surface --Digitally regulated output maintains constant brightness --Reverse polarity protection guards against improper battery installation --Toughened ultra-clear mineral glass with anti-scratch coating --Constructed from durable aircraft-grade aluminum alloy --Premium Type III hard-anodized and anti-abrasive finish --Waterproof in accordance with IPX-8 standards SELECT SPECS: --LED: 2x CREE XM-L2 --Runs on: 2x CR123A or 1x 18650 (Batteries NOT included) --Output mode/Runtime: -High: 420 lumens / 3.75hrs -Mid: 165 lumens / 10hrs -Low: 55 lumens / 30hrs -Eco: 10 lumens / 150hrs -Burst: 900 lumens -Peak Beam Intensity: 3380cd -Max Beam Distance: 116 meters --Dimensions: -Length: 3.3" (84mm) -Width: 1.81" (46mm) -Height: 1.88" (48mm) -Weight: 4 oz (115g) (excluding batteries) PRC