Featuring MEGA Down Imaging+ the user gets unprecedented underwater clarity with Down Imaging coverage down to 200 feet below your boat. This HELIX 12 offers 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.The Helix 12 Fishfinders have built-in Humminbird Basemap that provides a clear view of the underwater terrain of more than 10 000 lakes as well as the coasts. It supports AutoChart Live and is compatible with LakeMaster as well as Navionics maps and provides a Dual SD Slot to assist the need. The fishfinder has speed as well as temperature sensors with temperature alarm and graph. This CHO (Control Head Only) model allows you to pick the right accessory transducer for your needs including compatibility with Minn Kota Built-in MEGA Imaging trolling motors.