Cast aluminum housing;UV resistant finish;21 x 3W LEDs with 50,000+ hours average life span;Combination reflector pattern;100% optically clear LEXAN lens;Military standard breather;IP68 certification - Dust and waterproof, CE, RoHS, SAE, E-mark, High& Low Temperature, Vibration, Salt fog, UV, Drop Ball Impact, Mechanical shock test;Multi-position stainless steel mounting bracket;Oversize heat sink;Low power consumption;Operating Temp: -40 to +145 degrees;Submersible up to 10 Feet (3.25 meters);California Residents: WARNING