A Humminbird HELIX 7 CHIRP MEGA DI GPS G4 Fish Finder wraps you in the security that you'll never miss a fish, thanks to a high-definition seven-inch display and the many pre-loaded split-screen viewing options. MEGA Down Imaging peers 125 feet below your boat at three times the detail than standard Down Imaging Sonar. Dual-Spectrum CHIRP 2D sonar puts highly detailed fish arches, fish-holding structure, and the bottom in your clear view. Navigate your boat through known and unknown waters with AutoChart Live, an internal GPS, and the Humminbird Basemap. You'll know underwater terrain and surrounding points above water, plus possess charts of more than 10,000 lakes and have coastal coverage for the continental U.S. So many features are under your power that you'll wonder how you got along without it! Show everyone how you roll now when you install a Humminbird HELIX 7 CHIRP MEGA DI GPS G4 Fish Finder! Keypad Control Master HELIX at the touch of a button. Access the preloaded views from the user-friendly menu system operated by softkey controls that allow you to reliably operate your fish finder in any conditions. MEGA Down Imaging Get unprecedented underwater clarity with coverage down to 125 feet below your boat. You'll unlock new details with up to 3 times more detail than standard Down Imaging sonar. Dual-Spectrum CHIRP sonar Before you cast, know what's down there thanks to highly detailed fish arches and a clear view of fish-holding structure and the bottom. Powered by a Low-Q CHIRP transducer, Dual-Spectrum CHIRP 2D sonar offers two ways to search: Wide Mode for maximum coverage and Narrow Mode for focusing on the slightest detail. Humminbird Basemap Enhanced Basemap provides you with a clear view of underwater terrain and surrounding points of interest so you can fish and navigate with total confidence. Identify buoys, day markers, hazards, marinas, contours, depth markers, and much, much more. Includes charts of more than 10,000 lakes, plus coastal coverage for the continental U.S. Premium Chart Compatible Humminbird provides the most complete offering of premium chart options to anglers everywhere. Get a complete view of the world below with optional charts from Humminbird's LakeMaster and CoastMaster products, as well as your choice of compatible Navionics charts. Sold separately. AutoChart Live Create real-time maps of your fishing spots with access to patented Humminbird LakeMaster features. Map depth contours, bottom hardness, and vegetation as you drive your boat. Comes standard with eight hours of built-in recording time and is compatible with AutoChart Zero Line SD cards for virtually endless AutoChart Live mapping capacity. Internal GPS Single (1) Micro SD Slot Specifications: Item Number: 411610-1 Series: HELIX Display Size Diagonal: 7 in. Display Pixel Matrix: 1024 H x 600 V Sonar Standard: Dual-Spectrum CHIRP and MEGA Down Imaging Sonar Coverage: 20deg, 42deg, 60deg, and (2) 86deg at -10 dB Sonar Optional: 53 kHz and 50/Low Airmar CHIRP CHIRP Frequencies: 83/200 (75 - 155 / 130 - 250 kHz), Full Mode (150 - 220 kHz), Narrow Mode (180 - 240 kHz), and Wide Mode (140 - 200 kHz) Sonar Frequencies: 50/83/200/455/800 kHz and 1.2 MHz Depth Sonar: 1,200 ft. (standard transducer) and 3,500 ft. (optional 50 kHz) CHIRP Imaging: 455 kHz (440 - 500 kHz) and MEGA DI (1075 - 1150 kHz) Depth Down Imaging: 400 ft. (455 kHz) and 75 ft. (MEGA) Range Side Imaging Side-to-Side: 800 ft. (455 kHz) Interface: Keypad Control Features: Built-in GPS, Built-in Mapping, Dual-Spectrum CHIRP, Down Imaging, and MEGA Imaging Memory Card Slot: Single Micro SD Compatible With: AIS, AutoPilot, Minn Kota US2 Sonar, and Minn Kota Built-In MEGA DI Power Draw: 800 mA Power Input: 10.8 - 20 VDC Power Output Peak-to-Peak: 4000 W Power Output RMS: 500 W Screen Snap Shot: Included Sonar Recording: Included Mount Standard: Gimbal Mount Standard Size: 10.54 x 5.80 x 3.68 in. Mount Optional Size: 10.54 x 5.44 x 1.13 in. Transducer Mount Location: Transom GPS Chartplotting: Included GPS Trackplotting: Included LakeMaster Compatibility: Yes CoastMaster Compatibility: Yes Navionics Gold/HotMaps Compatibility: Yes Navionics Platinum+ Compatibility: Yes Platinum Compatibility: Yes Heading Sensor GPS: Yes Upgradable Software: Yes View Preset Keys: No X-Press Menu System: Yes Custom Digital Readout: Yes Custom View Selections: No Display Colors Grayscale: 16-Bit Display Size: 5 - 7 in. Speed: Included Temperature: Built-in Temperature Alarm: Yes Temperature Graph: Yes Transducer Included: XNT 9 HW MDI 75 T HDMI Compatible: No MEGA Live Compatibility: No UPC: 0082324056147 Included in Package: Control head Transom mount transducer Power cable Gimbal mounting bracket and mounting hardware Manufacturer's one-year limited warranty Please note: Once opened, the product cannot be returned and if defective or damaged must be returned to the manufacturer for warranty repair or replacement.