Echonautics BT70H600 130-210kHz High CHIRP 600watts 18 Tilted ElementModel: BT70H600-18A low-profile thru hull CHIRP transducer, that matches vessels deadrise to specific angle.Designed to minimize drag and to perform at high speedsSpecificationsFunctionDepth and TemperatureFrequencyCHIRP 130-210kHzMount styleThru HullTilt/deadrise18 tilted element ; for 16 to 24 hull deadriseMaterialBronzeRMS Power600 wattsHole diameter2.38 inCable length27 ftTemperature sensorNTCAcoustic windowUrethane