Humminbird Helix 15 Chirp Mega SI+ GPS G4N 15in 411320-1. 4in 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 15 includes standard features such...
Humminbird Helix 15 Chirp Mega SI+ GPS G4N 15in 411320-1. 4in 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 15 includes standard features such...