Simrad xSonic Airmar B150M Transducer 20° Tilt Model: 000-13922-001 Ideal for inshore or coastal fishing in shallow to medium depths CHIRPs from 95-155kHz to provide 60kHz of total bandwidth from one transducer Black 9 pin connector Cable length 10 m (33.0 ft) The B150M is a bronze, thru-hull CHIRP transducer, ideal for sportfishing and commercial vessels up to 8m (25ft) in length.This single-channel transducer offers Medium CHIRP for a balance between the great depth penetration of Low CHIRP, and the superior target resolution of High CHIRP.