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, 116 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. 2 x Signal Light Item Type: Signal LightMaterial: PCWeight: Approx.170g/ 6.0ozRated Power: 3WLight Source: LEDProtection Class: IP66Voltage: DC12VIrradiation Angle: 112.6°Lighting Type: Always OnMaximum Visible Distance: >1NM (1 Nautical Mile)Applicable Hull Range: Below 12m/ 39.4ftStart Mode: External Power ControlStorage and Working Temperature: -20 - +45℃Installation Method: Screw InstallationColor Temperature: Port (Red), Starboard (Green)