HELIX 12 CHIRP MEGA MSI+ GPS G4NThe HELIX 12 CHIRP MSI+ GPS G4N features a 12.1" display, MEGA Side Imaging+, MEGA Down Imaging+, Dual Spectrum CHIRP Sonar, and internal GPS with Humminbird Basemap. As with all HELIX G4N models, this HELIX 12 includes...