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 easy to use with any brand of kayak, it offers powerful protection and peace of mind for your ocean adventures. In general, ocean kayakers use the FREEDOM7 to protect themselves and their catch during fishing, and tend not to use the device when paddling long distances as the trailing antenna does create some drag.