This Airmar PM265LH pocket mount transducer uses narrow beams to send depth and temperature data as well as sonar returns to your Garmin Marine Network. A popular choice for boat builders, this 1 kW barewire bronze transducer has a maximum depth of 3,000 ft, an operating frequency of 42 to 65 kHz and 130 to 210 kHz, and a beamwidth of 16 to 25 degrees and 6 to 10 degrees. The pocket mount is installation dependent. Transducer kit comes with installation instructions. Compatible with the GSD 26 CHIRP professional sonar module.