Humminbird Helix 15 CHIRP MEGA SI+ GPS G4N 411320-1 The Humminbird Helix 15 CHIRP MEGA SI+ GPS G4N Fish Finder offers all the leading technology needed for even the most serious anglers. With Dual Spectrum CHIRP sonar, the Humminbird Helix 15 offers two sonar return modes—a narrow mode for seeing details and a wide mode for viewing a large area. Also, the Humminbird Helix 15 offers MEGA Down and Side Imaging+ to provide anglers with a crystal clear view 200 feet below and to either side of your boat. To easily connect multiple fish finders, the Humminbird Helix 15 features Ethernet Networking, while the One-Boat Network and Bluetooth enhance communication between fish finders, trolling motors, and other accessories.
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