The Ice Defense Pro Series brings a new level of convenience to ice fishing. The patented technology of the Ice Defense pulls up warmer water from below the surface of the ice to keep your ice hole open even in extremely low temps. The water moves at a slow rate and won't affect your fishing line, bait, or transducer beam. Plus, the sleek design of the Ice Defense Pro pairs with any 12-volt sonar system, flasher, or camera and connects directly to the unit's battery for added portability and convenience. Prevent ice build-up in your hole with the innovative Ice Defense Pro Series.Note: If your unit does not have an exposed battery, you may need an .Features:Specs:Includes: