Humminbird HELIX15 CHIRP Mega SI+ GPS G4N No Transducer

Humminbird HELIX 15 CHIRP MSI+ GPS G4N Control head OnlyModel: 411320-1CHO Keypad control: Master HELIX at the touch of a button. Access the preloaded views from the user-friendly menu system, operated by soft key controls that allow you to reliably operate your fish finder in any condition. MEGA Side Imaging+: See the world below like never before with a crystal-clear Side Imaging viewing out to 200 feet on either side of your boat. You'll unlock more fish and structure with 20% more detail and 60% more range capability than MEGA Side Imaging sonar. MEGA Down Imaging+: Get unprecedented underwater clarity with Down Imaging coverage down to 200 feet below your boat. You'll unlock more fish and structure with 20% more detail and 60% more depth capability than MEGA Down Imaging sonar. Dual Spectrum CHIRP sonar: Before you cast, know what's down there thanks to highly-detailed fish arches and a clear view of fish-holding structure and the bottom. Powered by our proprietary, Low-Q CHIRP tr