We've combined the venerable "C-Light" with our custom designed bases for a truly unbeatable combination. The light is visible for up to two miles, and lasts up to twenty-five hours in continuous operation on two "AA" alkaline batteries (not included). Attached to our suction cup or bolt-down base, it becomes the perfect light for paddling at night or in low visibility conditions. The light meets United States Coast Guard performance standards and can also be attached to a PFD as a personal recovery light. We recommend the suction cup base for fiberglass boats and the bolt-down for plastic (roto-molded) boats or boats with rough deck surfaces.