Garmin GT51M-TH CHIRP/Side/DownVu Xdcr New Condition. Features of Garmin GT51M-TH CHIRP/Side/DownVu Xdcr: Perfect for the coastal and offshore fisherman who want CHIRP traditional sonar CHIRP ClearVu and CHIRP SideVu scanning sonar Clear and crisp fish arches with superior target separation Clear pictures of objects Structure and fish that pass below and to each side of your boat Included Accessories: GT51M-TH Transducer Documentation Package Contents: Garmin GT51M-TH CHIRP/Side/DownVu Xdcr Garmin 010-01966-10: GT51M-TH CHIRP/Side/DownVu Xdcr New Condition