For boaters and watersports enthusiasts who want to run with the best, the rugged GPSMAP 78sc includes preloaded U.S. coastal charts and features a 3-axis compass, barometric altimeter, crisp color mapping, a high-sensitivity receiver, new molded rubber side grips, plus a microSD card slot for loading additional maps. And it floats! By Garmin.

• High-sensitivity, WAAS-enabled GPS receiver and HotFix
• Floats,rugged, waterproof (IEC 60529 IPX7)
• Worldwide built-in basemap with shaded relief
• 1.7GB internal memory, microSD card slot for optional mapping & data storage
• Bright 2.6" LCD sunlight readable color display (160 x 240 pixels)
• Full-speed USB and NMEA 0183
• Up to 20 hours of battery life, battery type: 2 AA (not included) NiMH or lithium recommended
• Wirelessly share thumbnails, routes, tracks, waypoints and geocaches between compatible units
• 3-axis compass, provides accurate heading even when the unit is not held level
• Barometric altimeter tracks pressure changes to pinpoint your precise altitude and to help monitor weather
• High-speed USB interface
• Preloaded U.S. costal charts
• Weight: 7.7 oz. with batteries
• Package includes: GPSMAP 78sc unit, USB cable, wrist strap and quick start manual