Maysee technology Ltd provide the model MS-WW-RGB-C is specious design for the light can be working in the sea! The housing is full 316L stainless steel material,it resistant to corrosion by the sea water. The full stainless steel houing weight reach 5KG each. We use CREE LED Chip,Each fixture pass by IP67 test,aging 48hours,high low voltage test,viabration test before ship.