Humminbird Helix 7 CHIRP SI GPS G4 Fishfinder with GPS and Side Imaging Sonar

View side-imaging sonar on the Humminbird helix 7 chirp si GPS g4 fishfinder's high resolution (1024w x 600h) 7" display. The easy-to-operate menu system and keypad are intuitive to use in any condition. This g4 model includes internal GPS . Humminbird Base map . and Auto Chart life (zero line SD card needed for more than 8 hours of sonar recording). Includes single MicroSD card slot . compatible with Humminbird & Navionics charts including Lake Master . Lake Master Plus . Smart Strike . Coast Master (VX) & Coast Master premium (VX)