Big LCD display, performance, and features including built-in water temp sensor. The new SeaFinder® 250 DF gives you dual-frequency sonar with all the best features, but at the most affordable price! Display: 4.5" (11.4 cm) diagonal screen Film SuperTwist LCD 240x240 pixel resolution Backlit screen and keypad 4-level grayscale Sonar: Depth capability to 800 ft* (244 m) with 300 watts RMS power High-performance, low-profile 50/200 kHz Skimmer® dual-frequency transducer with built-in temp sensor delivers an extra wide angle of fish detection area with high sensitivity settings - Operates at boat speeds up to 70 mph (61 kts) Advanced Signal Processing (ASP™) automatically adjusts your settings for the best sonar picture Patented GRAYLINE® separates fish from nearby structure and bottom Advanced Fish I.D.™ shows underwater targets in different sizes of fish symbols FishTrack™ displays target depth readings above fish symbols Surface water temperature readings come from a built-in temp sensor in the transducer Zoom with zoom bottom tracking and easy zoom-in/out control Performance: Easy to connect/disconnect with uniplug cable connector Internal back-up memory for key sonar settings Completely sealed and waterproof, even for use in harsh saltwater environments Full one-year warranty $149.99 Please call 1-908-642-8579 or e-mail us at NCTackle@aol.com with any questions. Thank you for shopping with us! FREE SHIPPING ON ORDERS OVER $250!