Cast Aluminum Housing, UV Resistant Finish 3x3" CREE RGB LED W/ 50,000+ Hour Life Span, 100% Optically Clear Lexan Lens, RGB 16 Million Colors, Bluetooth Controller App. works W/ Android or IOs (Free in App. Store) App controls 1-4 Sets of Rock Lights together. Brigh color options, Strobe Effect, sync with Music. IP68 Certification-Dust &Waterproof, CE, RoHs, SAE, E-Mark, Vibrations, Salt Fog, UV, Drop Ball Impact and Mechanical Shock Tested. Rubber Base, Low Power Submersible up to 10ft