... 5,Constant current driver 2012 Wholsale High power 6x3W LED Navigation lamp Features: 1), Super-clase high power LED which is ... shell has excellent corrosion-proof, makes the light to use in sea water freely. 3), High luminous efficiency, life-span ... reachs 50,000 hours.4), Built-in or external constant current driver.5), Overtemperature automatic protection function ...