The HELIX 9 CHIRP MEGA SI GPS G2N by Humminbird features a large 9" display with LED backlight, CHIRP MEGA Side Imaging, MEGA Down Imaging and 2D sonar. Includes GPS chartplotting, built-in Bluetooth, Ethernet networking capabilities, AutoChart Live with depth, vegetation and bottom hardness mapping, and unit cover.  MEGA Side-Imaging & Down Imaging | Choose MEGA Side Imaging for a crystal clear picture to the left, right and below your boat. Gain a 180° side to side perspective on the world below the surface. In an instant, the ultra-thin beam scans the area up to 240 feet to the left and right of your boat location—for total coverage of up to 480 feet. The return image for each slice is then added to the images taken immediately before and after to build an incredible view of the lake bottom. You can then magnify the detail of the image with the zoom feature or mark the GPS location of promising cover or structure directly on the screen. Side Imaging's high-frequency beams reveal structure, cover, and contour changes with crystal clarity. The images are so real you might think it’s a camera, but it’s not, so it doesn’t matter how murky the water is. Get a fish-eye’s view of what’s happening below your boat. These incredible images are created with high frequency sound waves emitted in ultra-thin slices. The sonar returns from these waves produce a “portrait.” As you patrol the water, you’ll watch fish, reefs, timber, brush, bridge pilings, rocks, and any other structure or cover pop with stunning detail.   CHIRP Digital Sonar | View low, medium and high CHIRP ranges, either individually or all at once. Dial in a specific kHz, search a defined range or cover the entire spectrum, it’s up to you. Because it uses a broader range of frequencies, Humminbird CHIRP also delivers extreme target separation, lower noise and richer, higher-resolution images.   SwitchFire | This puts anglers in complete command of how their sonar returns appear. With two unique display modes, Clear Mode and Max Mode, you can adjust to your fishing conditions on the fly. Add or remove detail, account for water depth, temperature and turbulence, even experiment with lure presentations all at the push of a button. SwitchFire adds a whole new dimension to 2D fish-finding.  AutoChart Live | Make a map where there is no map. AutoChart Live allows you to create richly detailed maps of your favourite fishing spots in real-time. Map the water as you drive the boat, with eight hours of built-in recording time.  i-Pilot Link | Enables your Humminbird fishfinder and Minn Kota trolling motor to communicate, delivering automatic boat control. From your Humminbird or the wireless remote, you can find, store and revisit your most productive fishing spots and tracks. With an AutoChart or Lakemaster map, you can follow any depth contour you choose, automatically, or cast to it from a set distance.  Networking | 5-Port Ethernet switch to link together multiple Humminbird head units or share transducers. NMEA 2000 ready for boat performance, weather or water conditions and an at-a-glance view of fuel consumption, engine performance and other vessel data. Display Size - Diagonal 9” | 800H x 480V | Colour TFT | 16-bit | LED Backlight Sonar Standard - MEGA Side Imaging | MEGA Down Imaging | CHIRP Digital Sonar | DualBeam PLUS Standard Sonar Coverage - 20°, 60° & (2) 86° & (2) 55° @ -10db (Total of 180°) Standard Sonar Frequency - 83/200/455/800 kHz & 1.2 MHz Sonar (Optional) - 50kHz, 50/Low Airmar CHIRP | Max Depth: 3500 ft  Target Separation - 2.5” Depth Capability - 125 ft(DI) | 400 ft (DI-455kHz) | 1500 ft Internal GPS - 10hz Waypoints - 2,750 | Routes - 47 | Tracks/Points - 50/20,000 Card Slots - 2 Transducer Standard - XM 9 20 MSI T Transducer Mounting - Transom Split Screen Zoom & Bottom Lock Power Input - 10.8-20 VDC Power Draw - 2.5 Amps Power Output RMS - 1000 Watts Power Output Peak to Peak - 8000 Watts