Airmar 509LHW 3kW 28 to 60kHz & 150 to 250kHz Thru-Hull TransducerThis all-in-one transducer for popular fishing frequencies (28, 38, 50 and 200) is our best performing, highest power, 2 to 3 kW transducer.It has a depth of 10,000 feet; an operating...