LED Round Stern Light - 01 series LED Round Stern Navigation Light, marine navigation lights, navigation lights, vertically mounted navigation lights, deck mounted lights, metal navigation lights Voltage：12VDC Power：2.2W Waterproof Grade：IP66 Beam Distance：2NM 01 Series Round Tail Lights are IP66 rated, giving you a higher level of waterproofing, no matter how bad the weather. They can be used on boats up to 20 meters long, with a visibility of 2NM. Equipped with durable LEDs and corrosion-resistant materials, these lights are less prone to damage and maintenance issues than any other lights on the market.