Garmin GT21-TH S/S Thru-Hull ClearV CHIRP, 600W 50/200kHz Traditional, 500W 260 455 ClearV CHIRP [010-01962-10] $474.99
Garmin Airmar Smart Sensor Depth & temperature 20 Degree Tilted NMEA 2000 DT800 [010-11105-00] $324.99