Garmin GPSMap 78SC

GPSMap 78SC 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! Specifications GPSMap 78SC Physical & Performance ? Physical dimensions: 2.6" x 6.0" x 1.2" ( 6.6 x 15.2 x 3.0 cm) ? Display size, WxH: 1.43" x 2.15" ( 3.6 x 5.5 cm) ; 2.6" diag ( 6.6 cm) ? Display resolution, WxH: 160 x 240 pixels ? Display type: transflective, 65-K color TFT ? Weight: 7.7 oz ( 218.3 g) with batteries ? Battery: 2 AA batteries ( not included) ; NiMH or Lithium recommended ? Battery life: 20 hours ? Water rating: IPX7 ? High-sensitivity receiver:  ? Interface: high-speed USB and NMEA 0183 compatible ? Barometric altimeter:  ? Electronic compass: Yes ( tilt-compensated 3-axis) ? Unit-to-unit transfer ( shares data wirelessly with similar units) :  Maps & Memory ? Basemap:  ? Preloaded maps:  ? Ability to add maps:  ? Built-in memory: 1.7 GB ? Accepts data cards: microSD? card ( not included) ? Custom POIs ( ability to add additional points of interest) :  ? Waypoints/ favorites/ locations: 2000 ? Routes: 200 ? Track log: 10, 000 points, 200 saved tracks Outdoor Features ? Automatic routing ( turn by turn routing on roads) : Yes ( with optional mapping for detailed roads) ? Geocaching-friendly: Yes ( Paperless) ? Custom maps compatible:  ? Hunt/ fish calendar:  ? Sun and moon information:  ? Tide tables:  ? Area calculation:  ? Picture viewer:  Garmin Connect? ? Garmin Connect? compatible ( online community where you analyze, categorize and share data) :  In the Box: ? GPSMAP 78sc ? Wrist strap ? USB cable ? Manual