The HELIX 15 CHIRP MSI Plus GPS G4N CHO features a 15.4″ 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 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.