The Garmin GT20‑TM is a versatile transducer designed for shallow‑water anglers who want both traditional sonar and CHIRP ClearVü scanning. It provides crisp fish arches and detailed images of structures beneath your boat.

GT15M-TH transducer is perfect for fishermen who want clear bottom definition under the boat as well as crisp, clear and wide fish arches with excellent target separation to depth up to 1000 feet. The 8-pin transducer features mid band CHIRP traditional sonar (85-165 kHz) and has a power rating of 600 W. The bronze thru-hull housing and stem makes it ideal for wooden fishing boats.