Lowrance 132-06 Structure Scan Sonar System, LSS-1with transducer High-detail, picture-perfect bottom viewing of ledges, channels, drop-offs, brush and more Works separately and in tandem with the award-winning, built-in Broadband Sounder of HDS displays and existing transducers Exclusive TrackBack feature offers simultaneous scroll-back of sonar and chartplotter "history" to set and share waypoints Enables high speed, easy-to-use, plug-and-play expansion of your marine networks Offers multiple choices in imaging transducer mounting locations With superb clarity, for add-on performance to any HDS multifunction display