FULL-FEATURED SONAR WITH 4.7", 128 X 240 B&W FSTN DISPLAY; ULTRASCROLL™ HIGH REP RATE SONAR; DUAL BEAM TRANSDUCER WITH SELECTABLE NARROW (14 FT) OR WIDE (45 FT) VIEW FOR MAXIMUM FRESHWATER PERFORMANCE; HIGH-DYNAMIC RANGE, ANALOG RECEIVER PERFORMS IN WATER AS LITTLE AS 1 FT DEEP; AUTOGAIN TECHNOLOGY FOR VISIBILITY OF MORE FISH; PATENTED TRANSOM/TROLLING MOUNT TRANSDUCER; EXCELLENT SHALLOW WATER PERFORMANCE; INCANDESCENT BACKLIGHT FOR DISPLAY & KEYPAD; 800W MAX, 100W RMS; 600-FT DEPTH; SEE-THRU® TECHNOLOGY SHOWS WEAK & STRONG RETURNS SIMULTANEOUSLY; POWER-DOWN SETTINGS BACKUP: SETTINGS ARE NOT LOST WHEN UNIT IS TURNED OFF; 2X OR 4X AUTOMATIC & MANUAL ZOOM; ALARMS FOR FISH SIZE, SHALLOW WATER, DEEP WATER & LOW BATTERY; BATTERY VOLTAGE INDICATOR; DIM: 4.9"H X 6.1"W X 2.6"D