Humminbird HELIX 12 CHIRP MSI+ GPS G4N without TransducerModel: 411970-1CHOThe 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...