The Humminbird HELIX G3 / G3N echo sounder series consists of five screen sizes: 7-inch, new 8-inch, 9-inch, 10-inch and 12-inch, each of which offers three sonar options: CHIRP 2D sonar, MEGA Down Imaging® and MEGA Side Imaging +. Some Helix G3 models allow users to download software updates via Bluetooth when they are available, as well as synchronize work with mobile devices. The network versions of Helix G3N allow you to control Minn Kota trolling motors that have an i-Pilot Link embedded system. Humminbird Helix G3 echo sounders are compatible with Humminbird LakeMaster®, SmartStrike ™, Navionics® + and HotMaps TM Platinum + cards. The built-in AutoChart® Live program is designed to create your own structural maps of reservoirs.