Cast off confidently with the GPSMAP® 79sc marine GPS handheld. This rugged, floating handheld features a sunlight-readable, high-resolution color display that is fogproof and scratch-resistant. You get access to a range of satellite constellations, so you get more reliable, accurate tracking around the world. Navigate wherever your adventures take you with built-in BlueChart® g3 coastal charts. With more memory than previous models, you can save and track 10,000 waypoints and 250 routes. Keep your bearings with the built-in compass.