Display:
 
    * 5" (12.7 cm) diagonal screen
    * Film SuperTwist LCD
    * High-definition 480x480 resolution
    * Amber LED backlit screen and keypad
    * 16-level grayscale
    * Overlay Data feature displays GPS data on sonar screens and sonar data on GPS screens
    * Resize Window feature allows width adjustment of either picture panel when in split-screen display
 
 
Sonar:
 
    * Digitally record/play sonar graphs and GPS trip details with optional, reusable compact Multi-Media Cards (MMC) or Secure Digital (SD) memory cards. One waterproof slot for instantly-expandable memory using a single 8MB-512MB card
    * Depth capability to 1500 ft* (457 m) with 4000 watts of peak-to-peak power (500W RMS)
    * High-performance, low-profile 50/200 kHz Skimmer® dual-frequency transducer with built-in temp sensor delivers an extra wide angle of fish detection area with high sensitivity settings - Operates at boat speeds up to 70 mph (61 kts)
    * SP-U transom-mount sensor included for precise trolling speed/distance log readings
    * FishReveal™ feature exposes fish targets hidden in surface clutter, weed beds, thermoclines, and other types of underwater cover
    * HyperScroll™ feature locates and displays fish targets at higher boat speeds
    * FasTrack™ vertical bar flasher displays realtime sonar returns and relative strength of each target
    * Advanced Signal Processing (ASP™) automatically adjusts your settings for the best sonar picture
    * Patented GRAYLINE® separates fish from nearby structure and bottom
    * Advanced Fish I.D.™ shows underwater targets in different sizes of fish symbols
    * FishTrack™ displays target depth readings above fish symbols
    * Surface water temperature readings come from a built-in temp sensor in the transducer
    * Zoom with zoom bottom tracking and easy zoom-in/out control
    * Selective on/off sonar alarms: Shallow, Deep, and Fish
 
 
GPS+WAAS:
 
    * 12-parallel channel GPS+WAAS reception with fast satellite lock-ons, precise tracking, and position updates every second with the external EGC-12W receiver
    * Selectable on/off WAAS reception for enhanced position accuracy to 3 m (under 10 ft) at select locations
    * All-new, built-in Eagle® background map with enhanced continental U.S. and Hawaii detail including nav aids
    * High-speed map screen updates
    * Optional GPS Mapping Accessories Pack with MapCreate™ CD software that:
          - Lets you create unlimited, custom, detailed maps on MMC or SD memory cards
          - Includes unique, searchable database of streets, addresses, and over 700,000 Point-of-Interest (POI) to easily find/identify marinas, restaurants, airports, emergency services, and more
    * Saves up to 1,000 waypoints, 1,000 event markers, and 100 routes (up to 100 waypoints/route)
    * 100 savable plot trails with up to 10,000 points per trail
    * 42 graphic icons to mark your favorite spots
    * 38 map zoom ranges - from 0.04 to 4,000 miles - with easy zoom-in/out control
    * Compatible with optional plug-and-play Lowrance FreedomMaps™, Fishing Hot Spots® Elite, LakeMaster® Pro Maps, and Navionics® electronic charts on MMC/SD cards
 
 
Performance:
 
    * Internal back-up memory keeps stored GPS data and sonar settings safe and accessible for years
    * Completely sealed and waterproof, even for use in harsh saltwater environments
    * Full one-year warranty
 
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The SeaCharter® 480DF is a high-performance, high-detail, dual-frequency sounder for depths to 1500 feet plus precision GPS+WAAS navigation with multiple electronic chart options. A truly smart choice for coastal and Great Lakes use, and for overall value!