1、[Easy to install] Adopt external power control, it comes with wirings under the base and mounting screws for easy and quick mounting installation. 2、[Manufacturing Material] Made of selected PC material, IP66 waterproof, 112.6 degree irradiation angle, corrosion resistance, anti rust, long lasting use. 3、[Applicable Hull Range] Ideal for use on boats up to 39.4ft (12m) in length, the red one is to be installed on port side and the green is on starboard side. 4、[Usage Scenes] Suitable for most ships, yachts, fishing boat, speed boat and other boats. Upgrade your existing running lights to improve the safety when boating, especially at night. 5、[Super Bright Lights] Using red color temperature and green color temperature LED bulbs, the maximum viewing distance is up to 1NM, giving us brighter lighting with lower power consumption. Item Type: Signal Light Material: PC Weight: Approx.170g/6.0oz Rated Power: 3W Light Source: LED Protection Class: IP66 Voltage: DC12V Irradiation Angle: 112.6° Lighting Type: Always On Maximum Visible Distance: >1NM (1 Nautical Mile) Applicable Hull Range: Below 12m/39.4ft Start Mode: External Power Control Storage and Working Temperature: -20 - +45℃ Installation Method: Screw Installation Color Temperature: Port (Red), Starboard (Green) 2 x Signal Light