The 931c features high performance sonar with an ultra wide, high resolution color display for big picture views of the bottom and no compromise split screens viewing. 931C DF Features: * Brilliant, 7" sunlight viewable color display with 480V x 854H resolution * Precision 200kHz or dual frequency 50/200kHz tranducer options * 750 Watts RMS, 6000 Watts PtP (200kHz) power output, 2 1/2 target separation, 1000 ft depth or 1000 Watts RMS, 8000 Watts PtP (50KHz) power output, 2 1/2 target separation, 2500 ft depth** * Memory card expansion slot to save Screen Snap Shots or optional cartography * Dual microprocessors and dual channel sonar transmitter/receiver deliver fast, smooth operation * GPS Ready - Full screen trackplotter, 3D track and split screen sonar/track with adjustable split * Programmable View Presets Access Important Screens with one touch * Plug & Play compatibility with the GPS Receiver, WeatherSense Barometric Pressure, Wireless Sonar Link Advanced Accessories * In-dash or Gimbal mount * Fresh & saltwater set up options for optimal performance in any environment * Water surface temperature included in transducer, speed paddelwheel included * Complete GPS Trackplotting capability to show position, mark hotspots and easily find your way home with optional GPS connected * PC Connection capability to save waypoints, and upgrade internal software * Accelerated Real Time Sonar operates at up to 40 times per second to instantly capture the action under the boat. * X-press menus place most important setting at your fingertips * Freeze Frame pauses the sonar scroll for detailed inspection of the screen * Instant Image Update immediately shows the results of setting changes for the most accurate fine tuning * Sonar Echo Enhancement technology is so sensitive itll track a jig to over 40ft and separate targets within 2 inches! * Fully gasketed waterproof design & it floats * Selectable large digit screen for easy-to-read number display * Backlight for night viewing * TripLog with distance, elapsed time, and average speed * Totally automatic operation or totally manual operation with upper and lower range control * Temperature graph overlay and audiable temperature alarm * One-touch Zoom with 2x, 4x, 6x, and 8x zoom levels * Adjustable chart speed * Feature memory retains your settings * One-year limited warranty * Assembled in U.S.A.