Garmin GT12M-THF Bronze Thru-hull Medium CHIRP 0d Tilted Element Depth/TempThe Garmin GT12M THF Bronze Thru hull Depth Temp transducer is built for midsize fishing and cruising boats, delivering real time depth and temperature data with crisp CHIRP sonar while reducing drag for smoother rides. Transducer type: Bronze thru hull, flush mount depth temperature transducer designed for saltwater durability and streamlined performance. Power and frequency: 350 watt midband CHIRP (85165 kHz) for crisp structure definition and