• Ocean Guardian's FREEDOM7 Shark Shield gives you up to 6-hours protection from all sharks
• The only scientifically proven and independently tested electrical shark deterrent technology for diving
• Creates a powerful protective electrical field approx. 6m (20') x 4m (13') in diameter that turns sharks away
• Built-in rechargeable lithium battery, with LED life indicator, provides up to six-hours of continuous operation, and over 1000 charge cycles