The HELIX 8 CHIRP MEGA DI GPS G3N CHO features an 8" display, MEGA Down Imaging and Dual Spectrum CHIRP Sonar. Includes GPS mapping, built-in Bluetooth, Ethernet networking capabilities, AutoChart Live with depth, vegetation and bottom hardness mapping. Top it all off with Humminbird Basemap built-in. This is a Control Head Only unit—Transducer is not included. Model is compatible with Minn Kota Built-in MEGA DI trolling motors.