19.50 in. of high-strength aluminum alloy case in blue. It features adjustable spot to flood beam, rotating switch and complete O-ring seals. Has two high intensity White Star Krypton Gas Lamps for enhanced brilliance and extended range with 36 hours lamp life and 16 hours continuous battery life and 20K Peak Beam Candlepower. It requires 6-D Cell alkaline batteries. Weighs 50.00 ounces with batteries.