Frequency : CHIRP high range 150 - 240 kHz; DownVü CHIRP 455 kHz 425-485 kHz and 800 kHz 790-850 kHz; beam angle : Traditional 24 - 16; DownVü/SideVü 2.0 at 455 kHz and 1.0 at 800 kHz; maximum depth : Traditional sonar: 240 meters ; DownVü: 150 units