Detail Specification : Best Price for Garmin 78s GPS Handheld with Manual in Chinese and English For sailors and water sports enthusiasts who want the best equipment, the rugged GPSMAP 78s offers a 3-axis compass, a pressure altimeter, a clear color map, a highly sensitive receiver, and a new molded rubber side grip.It also has a microSD™ card slot to load additional maps.And it floats! Explore the world GPSMAP 78s has a built-in nationwide...