All packed into one transom mount transducer, the two frequency configurations, 455/800kHz produces the DownScan Imaging up to 300' and the 50/200kHz digital sonar provides depths up to 2,500ft. Compatible with Elite 5x HDI, Elite 5 HDI, Elite 7 HDI, Elite 7 CHIRP, Elite 7X CHIRP, HDS Gen 3, Elite 7x HDI units.