Sharkbanz’s patented magnetic technology is the result of long-term scientific research and testing. Sharkbanz utilize powerful permanent magnets to create an effective shark deterrent that’s always on and require no batteries or charging. When sharks approach Sharkbanz, they detect the device’s strong electromagnetic field, which provides a sudden sensation that is thousands of times stronger than the signal produced by anything in a shark’s normal food chain. Consequently, sharks are deterred away from Sharkbanz. This cause and effect is analogous to having a bright light suddenly shined in your eyes in a dark room. You would not be hurt, but you would want to turn away.