HELIX 12 CHIRP MEGA SI+ GPS G3N. Screen is in great shape. Only 77 hours on the unit. Some light cosmetic scuffing on the transducer, but it works great. The item "Humminbird HELIX 12 CHIRP MEGA SI+ GPS G3N" is in sale since Sunday, January 17, 2021. This item is in the category "eBay Motors\Parts & Accessories\Boat Parts\Electronics & Navigation\Fish Finders & Depth Finders".scout" and is located in Dothan, Alabama. This item can be shipped to United States.