1,Stainless steel 316 2,With semileds led chips 3,IP68 4,3W, 6W, 9W, 18W, 27W, ... 36W etc 5,Constant current driver Features: 1), Super-clase high power LED ... when environment temperature and voltage is normal, the lamp also work normal.6), Professional waterproof design and ... or payment.4), We accept OEM order. Other Marine Lights: The Newest Design 6X3W Undersea boat led lamp