The Humminbird Helix 7 Chirp SI GPS G4 Fish Finder features powerful sonar technology, including Dual Spectrum CHIRP Sonar, CHIRP Side Imaging, and CHIRP Down Imaging. The Dual Spectrum CHIRP is particularly impressive, giving you full-spectrum capability and the ability to select your own start and end frequencies. This feature makes locating fish and distinguishing between bait and game fish, structures, and vegetation easier. This fish finder also comes with AutoChart Live, Internal GPS, and Humminbird Basemap. The upgraded high-definition 7' display provides a clear view of the many pre-loaded split screen options. With the powerful Humminbird Helix 7 Chirp SI GPS G4 Fish Finder, you'll never miss a fish. Keypad control: Master HELIX at the touch of a button. Access the pre-loaded views from the user-friendly menu system, operated by softkey controls that allow you to reliably operate your fish finder in any condition. CHIRP: CHIRP Down Imaging filters out noise and clutter for a clear view beneath your boat. Dual Spectrum CHIRP sonar shows highly detailed fish arches and a clear view of fish-holding structures and the bottom. Internal GPS and Humminbird Basemap: The enhanced basemap provides a clear view of underwater terrain and surrounding points of interest, allowing you to fish and navigate with total confidence. It includes charts of more than 10,000 lakes and coastal coverage for the continental U.S. Premium Chart Compatible: 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. 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. It comes standard with eight (8) hours of built-in recording time and is compatible with AutoChart Zero Line SD cards for virtually endless AutoChart Live mapping capacity. Specifications: Item Number: 411920-1 UPC: 0082324058288 Display Size - Diagonal: 7 in. Display Pixel Matrix: 1024H x 600V Transducer Included: XNT 9 HW SI T Memory Card Slot: Single Micro SD Sonar-Standard: Dual Spectrum CHIRP, CHIRP Down Imaging, CHIRP Side Imaging Sonar-Coverage: 20, 42, 60 & (2) 86 @ -10dB CHIRP - Frequencies Supported: Narrow Mode (180-240 kHz), 83/200 (75-155/130-250 kHz), Wide Mode (140-200 kHz), Full Mode (150-220 kHz) Sonar-Frequencies Supported: 50/83/200/455 kHz Depth-Sonar: 3,500 ft (optional 50 kHz), 1,200 ft (standard transducer) CHIRP - Imaging Frequencies Supported: 455 kHz (420-520 kHz) Depth-Down Imaging: 400 ft (455 kHz) Range-Side Imaging (Side-To-Side): 800 ft (455 kHz) Interface: Keypad Control Power Draw: 800 mA Power Input: 10.8-20 VDC Power Output Peak-to-Peak: 4000 Watts Power Output RMS: 500 Watts Mount-Standard: Gimbal Mount-Optional: In-Dash Mounting Kit Transducer Mount Location: Transom GPS Chartplotting: Included GPS Receiver: Internal GPS Trackplotting: Included Waypoints, Routes, Tracks/Points: 2,750, 45, 50/20,000 360 Imaging Compatibility: No MEGA Live Compatibility: No Humminbird Basemap: Included LakeMaster Compatibility: Yes CoastMaster Compatibility: Yes Navionics Gold/HotMaps Compatibility: Yes Navionics Platinum+ Compatibility:Yes Platinum Compatibility: Yes Minn Kota i-Pilot Link Compatibility: No Minn Kota Talon Shallow Water Anchor Compatibility: No Radar Compatibility: No 5-Port Ethernet Switch Compatibility: No AIS Compatibility: Optional Autopilot Compatibility: Yes Heading Sensor GPS Compatibility: Yes NMEA2000: Not Supported Target Separation: 2.5 in Upgradable Software: Yes View Preset Keys: No X-Press Menu System: Yes Speed: Included Temperature: Built In Temperature Alarm: Yes Temperature Graph: Yes HDMI Compatible: No Includes control head, transom-mount transducer, power cable, gimbal mounting bracket, and mounting hardware Manufacturer's one-year limited warranty