Humminbird 4087201&nbsp; 998C HD SI Combo Side Imaging/Down Imaging Dual Beam Fishfinder and GPS with Ethernet Depth: 150 ft (SI/DI) 1500 ft (3000 ft with optional 50 kHz transducer for extreme deepwater use) Mounting: Gimbal or In-dash Side Imaging, Down Imaging and DualBeam PLUS SONAR with SwitchFire Precision GPS and built-in ContourXD Dual SD Card Slots 8" Wide-screen With 480 X 800 Pixel Color Display With Ccfl Backlight * 16:9 Color Tft * Dual beam Plus Sonar With Up To 8,000 Watts Ptp Power Output * Gps Chartplotting With Built-in Contour Xd Mapping * Navionics and Lakemaster Compatible