-EASY TO USE and quick to learn for fishing / sailing / cruising / and more! -Screen sizes from 8 to 15 inches available -Latest 2021 charts covering the entire West Coast -Compatible NMEA 0183 GPS receiver available from $75 -Expandable system compatible with RADAR, AIS, DEPTH SOUNDER (TRANSDUCER) and MORE! -Keyword Garmin Raymarine Simrad Lowrance B