Garmin GT51M-TH

Transom Mount: These are attached to the back (transom) of a boat hull. Alternatively, use the included equipment to install on a trolling motor. In-hull: An in-hull transducer is installed inside a boat hull against the bottom

77/200 kHz sonar transmits a single ping at either 77 or 200 kHz 50/200 kHz sonar transmits a single ping at either 50 or 200 kHz High-wide CHIRP has a frequncy range of 150-240 kHz in each transmission

260/455 kHz ClearVü is ideal for deeper water, 1000\' Max Depth scanning sonar 455/800 kHz is the most flexible scanning sonar up to 500\' max depth Ultra-High Definition 800 kHz ClearVü is ideal for 200\' Max depth Scanning sonar

260/455 kHz SideVü is ideal for deeper water, up to 750\' max depth 455/800 kHz is the most flexible scanning sonar up to 500\' max depth Ultra-High Deffinition 1200 kHz SideVü is ideal for 30\' max depth