... High luminous efficiency, life-span reaches 50000 hours 3, Lower electric consumption 4, Waterproof (IP68), Shake-proof, Energy-saving, ... luminous efficiency, life-span more than 50000 hours4, Lower electric consumption 5,Waterproof, Shake-proof, energy-saving, environment-friendly ... , good for underwater boat lights Application Picture: 6w led replacement BAY15D bulbs with 4pcs multi-chips