This thru-hull transducer provides ultra-clear sonar pictures of objects, structures, and fish that pass below your boat. This traditional sonar and CHIRP DownVü/SideVü transducer is optimized for depth performance and rough conditions. The CHIRP DownVü/ SideVü elements have a power rating of 500W per element (1,500W total) and operating frequencies of 260/455 kHz. The traditional sonar has a power rating of 600W and operating frequencies of mid-band CHIRP 80-160 kHz. Transducer includes a built-in fast-response temperature sensor. For hull deadrises less than 25°. Compatible with GPSMAP 7607xsv, GPSMAP 7608xsv, GPSMAP 7610xsv, GPSMAP 7612xsv, and GSD 25 Premium Sonar Module. GT51M-TM includes a 12-pin transducer with mounting hardware and installation instructions.