The Lowrance Elite-4 DSI Fishfinder delivers advanced fish finding capabilities - now with exclusive Lowrance DownScan Imaging (DSI) for crystal-clear, photo-like views of the underwater world. Thermoclines are exposed, fish are truly revealed, hard and soft bottoms are easily distinguished, and structure is clearly defined - all in brilliant color. A 3.5" color display furnishes higher 320 x 240 resolution, and also features new, brighter LED backlighting for optimum viewing in any conditions - even in bright sunlight and at wider angles. The 350W RMS Sounder (2,800W peak-to-peak) reaches recently tested depths of up to 200ft, and its new, low-profile, high-speed Skimmer DSI Dual Frequency 455/800kHz Transducer (transom-mount) delivers selectable 455 kHz sounding for wider and deeper sonar imaging, as well as, 800 kHz for enhanced, down-looking, crystal-clear images of targeted locations. A convenient TrackBack feature also offers immediate scroll-back capabilities to review up to four pages of fishfinder history to review targets in closer detail and save waypoints. Packed with easy-to-use menus - plus Advanced Mode to expand features selection - it’s easier to use than ever before. The all-new case/mounting design also provides for easy one-hand tilt/swivel view adjustment, removal and re-install. The Lowrance Elite-4X DSI Fishfinder delivers best-in-class Lowrance fishfinder technology, including incredibly DSI capabilities.