The Garmin GPSMAP 79sc Marine Handheld is the perfect source for your primary or backup navigational needs while on your boat. The 79sc boasts a 3” colored screen that displays preloaded Bluechart G3 coastal charts for the US and Great Lakes, helping you navigate with ease every time your boat enters the water. The embedded U.S. G3 mapping will offer navigational aids, spot soundings, tides & currents, and more. Store up to 10,000 waypoints and 250 routes with the built-in increased internal memory storage, which can be expanded with the addition of a blank SD card if you have more fishing hotspots to store.