ACR Firefly Plus Strobe - The ACR Firefly Plus gives you a powerful omni-directional strobe and a bright flashlight in a compact, waterproof, impact-resistant package. Dependable safety equipment for boaters, skiers, hikers and other outdoor enthusiasts. High-intensity xenon strobe is visible over one mile. Built with tough High-Viz orange ABS plastic. Easily connects to life jackets and backpacks with webbing attachments. Waterproof up to 328 ft. If you drop it overboard, don't worry. It floats! Two AA alkaline batteries or 1.5V lithium batteries provide up to 10 hours of strobe or two hours continuous flashlight use. COLOR ORANGE