Key Specifications/Special Features: Manufactured by Doublewise company Distance of visibility up to 2nmCan be ordered in steady burnAutomatically turns on at dusk and off at dawn Completely self-contained and watertight Designed to operate reliably in harshest of environmental and work conditions Polycarbonate lens is virtually indestructible Will charge under nearly all weather conditions and up to 70 hours of operating capacity from a full charge Manufactured to ISO9001: 2000 quality assurance standards and CE certificated Proprietary, patented dome protects solar panel while improving efficiency, sheds snow The batteries can be interchangeable