Garmin 010-01960-00 GT20-TM Transducer Consistently displays fish arches as well as clear pictures of objects, structure and fish that pass below your boat 20 ft. transducer cable with built-in fast response temperature sensor has a power rating of 500 W Depth of 1,900 ft. (traditional) and 750 ft. (ClearV) Operating frequencies of 77/200 kHz (traditional) and 455 kHz (ClearV) Transducer comes with transom and trolling motor mounts and installation instructions