Multifunctional portable All-round white Navilight compatible with RAILBLAZA StarPorts™ EASY-TO-USE Mounting System. - US Coast Guard approved for 2 nautical miles- 5 Modes: 360° All-round light / Anchoring light, 225° Masthead light, 135° Sternlight, Flashing light, Cabin light- Floats light facing up- Submersible to 20 m/66 ft.- Powered by three AAA batteries (not included)