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GPSMAP Sounder Similar in styling and function to the GPSMAP Sounder, the GPSMAP Sounder along with its counterpart, the GPSMAP add preloaded U.S. inland freshwater cartography to its enhanced worldwide basemap information. The preloaded inland maps offer shoreline resolution throughout the U.S., with even more detailed 10-meter resolution on select lakes. Other details include depth contours, tide and current data, boat ramps, mile markers, hazards, marinas, campgrounds, area roads, and more. Both units accept preprogrammed data cards and are compatible with the latest BlueChart? g2 series marine cartography. The built-in RMS sounder on the GPSMAP features Ultrascroll for high-speed screen updates, and its Garmin CANet bus allows sounder display information to be shared with another chartplotter onboard. GPSMAP Sounder Features:256-color TFT display, 4.0"H x 3.0"W, 5.0-inch diagonal, x pixels CCFL backlight for display and keypad Ultra-dim backlight for nighttime operation with user programmable levels for day and night Unit dimensions: 7.1" H x 6.3" W x 3.1" D internal antenna Power output: watts RMS watts peak to peak, dual beam Depth: feet dual beam Transom mount transducer: 60 degree, 20 degree, dual beam Built-in Inland maps, provides shoreline resolution throughout the U. S., 10-meter shoreline resolution and depth contours on select lakes, USCG light list, wrecks and obstructions, real-time tide and currents, interstates, state highways, and rural roads CANet proprietary bus allows display and control of full-feature sounder data supplied from Garmin sounder New sounder design featuring excellent shallow-water performance Ultra scroll; user adjustable Adjustable range with automatic display re-scaling of picture See-Thru technology: shows weak and strong returns simultaneously Depth Control Grain DCG: automatically adjusts fishfinder sensitivity according to depth Power down backup of settings: customer settings are not lost when the unit is turned off Pre-loaded with over 15 user-interface languages Water temperature log and graph Round flasher display mode A-scope Whiteline Adjustable depth line 2X and 4X Automatic and manual zoom Water speed capable Odometer Adjustable keel offset Alarms for fish size, shallow water, deep water, and battery voltage Battery voltage indication Detailed fish arches. FREE Shipping Over $100, No Sales Tax