Garmin GPSMAP 78S worlwide handheld GPS navigator has 1.43" x 2.15" transflective 65-K color TFT display, display resolution 160 x 240 pixels, physical dimensions 2.6" x 6.0" x 1.2", weight 7.7 oz, 2 AA batteries, battery life 20 hours, water rating IPX7
high-sensitivity receiver, barometric altimeter, electronic compass. Also this Garmin GPSMAP 78S worlwide handheld GPS navigator comes with high-speed USB interface and NMEA 0183 compatible.