Garmin GPSMAP 531s 5-Inch Waterproof Marine GPS and Chartplotter with Sounder

Garmin GPSMAP 531s 5-Inch Waterproof Marine GPS and Chartplotter with Sounder Review

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Garmin GPSMAP 531s 5-Inch Waterproof Marine GPS and Chartplotter with Sounder Feature

• Large, ultra-bright 5" diagonal QVGA display
• 234 x 320 pixels
• Preloaded with charts for over 14,000 U.S. lakes and navigable rivers
• Built-in high-sensitivity GPS receiver
• 2 NMEA 0183 I/O ports

GPSMAP 531 Series GPS Receiver (GPSMAP 531S; With dual-beam transducer)