ULTRA-BRIGHT 4 DIAGONAL QVGA DISPLAY; 240 X 320 PIXELS MORE THAN 800 NITS OF BRIGHTNESS; NMEA 2000 CERTIFIED; PRELOADED WORLDWIDE MARINE BASEMAP; COMPATIBLE WITH GXM 51 FOR XM SATELLITE RADIO & XM WX SATELLITE WEATHER; BUILT-IN HIGH-SENSITIVITY GPS RECEIVER; HIGH-SPEED PROCESSOR FOR FAST SCREEN REDRAWS & SMOOTH PANNING; STREAMLINED USER INTERFACE MAKES IT SIMPLE TO SELECT MODES & FEATURES; SINGLE SECURE DIGITAL CARD SLOT FOR BLUECHART G2 VISION CARDS, & SAVING WAYPOINTS, ROUTES & TRACKS TO A SECURE DIGITAL CARD; ADDING OPTIONAL BLUECHART G2 VISION CARDS PROVIDE ENHANCED NAVIGATION FEATURES LIKE AUTO GUIDANCE, SATELLITE IMAGERY, 3D MARINERS EYE VIEW & 3D FISH EYE VIEW; BACKLIT KEYPAD FOR EASY OPERATION IN LOW LIGHT CONDITIONS; DIM: 5.7L X 5W X 2.7HLength: 11.70Width: 8.40Height: 5.30