Garmin GPSMAP 76CS 1.5-Inch Waterproof Marine GPS Handheld marine 12-parallel-channel GPS+WAAS receiver with built-in electronic compass and barometric altimeter 115 MB internal memory for loading MapSource detail; USB interface for quick chart and map downloads Sunlight-readable, 256-color, 2.6-inch diagonal TFT display; 10,000 point automatic track log with 20 savable tracks Preloaded Marine Point database with nautical nav aids for North and South America and U.S. tide stations Runs for 20 hours on 2 AA batteries; measures 2.7 x 6.2 x 1.4 inches (W x H x D); 1-year warranty