Now in stock, Garmin GPSMAP 421S Chartplotter/ Sounder. The Garmin 421S comes preloaded with worldwide marine basemap, internal gps antenna and a transom mounted transducer. The small yet versatile 4" sunlight viewable display is perfect for small center console and starboard side helm boats. The bracket mount makes for easy removal when not in use. All this and more features could be yours, simply call 401-783-0783 for pricing and details.