The M850 is a self-contained marine lantern with 6 NM of nominal range. This marine lantern is distinguished by its reliability and robustness: the base and the head are made of polycarbonate and the body of extruded and painted marine aluminum. It incorporates a LED light source, 8º or 10º vertical divergence optics, electronic flasher, MPPT charge regulator, photovoltaic panel and replaceable battery.