LED Underwater Surface Mount Boat Light 6W Blue Stainless Steel Housing Waterproof Ip 68 Made of high quality Marine grade Stainless Steel 316 ; 6W LED light Waterproof(IP68), Shake-proof, Energy-saving, Environment-friendly, with Marine Grade Wire Designed for Surface Mount (safer than thru-hull) Overtemperature automatic protection function. When environment temperature is more than 45 degree celsius or the voltage is above 30V, the output current of built-in constant current driver will be shutdown in order to protect the LED without damage, and when environment temperature and voltage is normal, the lamp also work normal. Super-class high power LED which is encapsulated by high efficiency and latest heat disipation structure.