Ocean Guardian FREEDOM7 Powered by Shark Shield Technology Provides powerful protection when diving, spearfishing, freediving, and kayak fishing. Powered by Shark Shield Technology, the Ocean Guardian FREEDOM7 gives you up to 6-hours protection from all predatory sharks including Great Whites. Lightweight and designed to fit seamlessly with your existing gear, it offers powerful protection and peace of mind so you can get out there and explore the ocean wilderness.