Furuno 165T-PM542LM High-Power Pocket Mount Combination TransducerModel: 165T-PM542LMDFF3D operating frequency 165 kHzBuilt-in motion sensorBuilt in temp sensorLow—CHIRPS from 30 kHz to 60 kHz, Beamwidth 19° to 10° (10° to 5° fore-aft)Medium—CHIRPS from...