... First-class stainless steel 3, High luminous efficiency 4, Widey working current range Application: " Underwater Light for Boat, Yacht, Surfboat ... the Marine, Navigation, the illuminative light as new fashion illumination" Features: 1, Super-clase high power LED which is encapsulated ... excellent corrosion-proof, makes the light to use in sea water freely. 3, High luminous efficiency, life-span reachs ...