Garmin GT20-TM Transom Mount DownVü 500W (CHIRP 455/800kHz); Traditional 500W (77/200kHz) Transducer w/Temp - 8-PinExperience precise underwater imaging with the Garmin GT20 TM Transom Mount DownV 500W, a dual mode transducer designed for anglers who want high resolution view beneath the boat and broad depth coverage. This 8 pin transducer pairs DownV imaging with traditional sonar and fits seamlessly with Garmin display units for straightforward setup. Dual mode 500W sonar: DownV CHIRP 455 800 kHz delivers high resolution images directly beneath the vessel, while