HIGH-SENSITIVITY GPS RECEIVER; COLOR HANDHELD MAPPING IDEAL FOR BOTH MARINE & OUTDOOR USE ; BRIGHT, SUNLIGHT-READABLE COLOR TFT DISPLAY ; 128 MB MICRO SECURE DIGITAL CARDTM FOR STORAGE OF OPTIONAL MAP DETAIL; FAST USB CONNECTIVITY MAKES LOADING CHARTS & MAPS QUICK & EASY; NAVIGATION INSTRUCTIONS CAN BE SHARED WITH REPEATERS, PLOTTERS & AUTOPILOTS USING NMEA PROTOCOLS THROUGH THE DEDICATED SERIAL PORT; INCLUDES A BAROMETRIC ALTIMETER FOR EXTREMELY ACCURATE ELEVATION & VERTICAL PROFILE DATA; ELECTRONIC COMPASS DISPLAYS ACCURATE HEADING WHILE STANDING STILL; SCREEN SIZE: 2.2inchH X 1.6inchW 256-COLOR TFT DISPLAY; DIM: 6.2inchH X 2.7inchW X 1.2inchD; 76CSX; WITH BAROMETRIC ALTIMETER & ELECTRONIC COMPASS