Solar Dock Warning Light - Waterproof Solar Dock Lighting - Flashing 360 Degree Lighting Solar re-charging automatic dock lighting provides 360 degrees of lighting. Ideal for identifying docks, navigation aides or obstructions at night Turns on automatically at dusk. Flashes 2 times every 2 seconds. Visibility up to 2 miles. Heavy duty clear ABS plastic case - fully waterproof and weatherproof. IP65 rated Mounts several ways - underside flange (hardware included); Under-center threaded pipe or flange mounted A bright fully automatic re-chargeable navigation and dock identification light. Large 6" diameter solar panel.