Raymarine A50D 5-Inch Waterproof Marine GPS and Chartplotter (With U.S. Coastal Charts) All the features of the A50 plus a 500 Watt HD Digital Fishfinder built in. Built-in 12 Channel GPS Receiver with WAAS Sunlight Viewable High Resolution VGA (640x480) display Fully waterproof enclosure Tilt swivel mount features cable management and quick release for easy removal from the boat