Garmin GPSMAP 78sc 2.6-Inch Waterproof Marine GPS and Chartplotter Worldwide shaded relief basemap microSD card slot for optional mapping 3-Axis compass & barometric altimeter Preloaded with US Bluechart g2 data including AK, HI & Bahamas Floats, buoyant Featuring a bright 2.6-Inch LCD color display with built-in basemap and high-sensitivity GPS receiver, the GPSMAP 78 series takes recreational navigation to a whole new level. All three models are waterproof, and include a built-in microSD card slot […]