Machined black aluminum case. Pushbutton tail cap switch. Anodized for corrosion resistance and durability. "Spot-to-Flood" adjustable LED beam. Individually serial numbered. Powered by three (3) AAA alkaline batteries (included). Can be seen for 145 meters. Batteries last 8 hours and 45 minutes at full power, with 139 lumens of light output. Last 36 hours on low power. Weather resistant, survives a 1 meter drop. 3 way start, 1 quick click turns on high power, 2 quick clicks activates at 25 percent powerand 3 quick clicks turns on the emergency safety strobe. A USA manufacturer.