... efficiency and latest heat dissipation structure. 2, High luminous efficiency, life-span reaches 50000 hours 3, Lower electric ... luminous efficiency, life-span more than 50000 hours4, Lower electric consumption 5,Waterproof, Shake-proof, energy-saving, environment ... ,Size: Φ16x50mmHApplication: Highest Waterproof grade IP68, good for underwater boat lights Application Picture: 6w led navigation light ...