Garmin GT23M-TM Plastic, TM Transducer, Mid-Band CHIRP/CHIRP DownVu - 260/455kHz, 500W, 8-Pin [010-12404-00]GT23M TM Plastic, TM Transducer, Mid Band CHIRP CHIRP DownV 260 455kHz, 500W, 8 Pin GT23M TM transducer is perfect for coastal and offshore fishermen who want CHIRP traditional sonar and CHIRP DownV scanning sonar. This transom mount transducer consistently displays clear and crisp fish arches with superior target separation as well as clear definition of structure below the boat. The 8 pin transducer features mid band CHIRP traditional sonar (80 160