GT23M-TM transducer is perfect for coastal and offshore anglers who want CHIRP traditional sonar and CHIRP ClearVu; 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. 8-pin transducer Features mid-band CHIRP traditional sonar CHIRP ClearVu; (260/455 kHz) element has a power rating of 500 W.