"The HELIX 12 CHIRP MDI+ GPS G4N features a 12.1"" display, MEGA Down Imaging+, Dual Spectrum CHIRP Sonar and internal GPS with Humminbird Basemap. As with all HELIX G4N models, this HELIX 12 includes standard features such as AutoChart Live, Wi-Fi and NMEA 2000, in addition to Bluetooth and Ethernet networking for compatibility with the One-Boat Network family of products from Humminbird, Minn Kota and Cannon."