Amazing, high-definition, 640Vx480H pixel, 256-color, sunlight-viewable TFT display! Deep 50/200 kHz dual-frequency operation gives you the power for saltwater and Great Lakes operation! Includes water temp/trolling speed/distance readings! Display: * Ultra-bright, 5" (12.7 cm) diagonal screen * 256-color, active matrix TFT LCD * High-definition 640Vx480H resolution * Fluorescent cold-cathode backlit screen and keypad * Unique Resize Window to adjust split-screen display * Overlay Data feature displays select digital readings over the sonar graph Sonar: * Depth capability to 1500 ft* (457 m) with 4000 watts of peak-to-peak power (500W RMS) at 50kHz * 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) - Variety of other transducer purchase options available * SP-U transom-mount sensor included for precise trolling speed/distance log readings * Adjustable ping speed with automatic HyperScroll™ to display fish targets at higher boat speeds * Choice of six color display modes to match outdoor light conditions, and to help reveal fish hidden in underwater cover * FasTrack™ vertical bar flasher displays real-time sonar returns and relative strength of each target * Advanced Signal Processing (ASP™) automatically adjusts your settings for the best sonar picture * COLORLINE™ separates fish from nearby structure and bottom, and helps define bottom composition and hardness * 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 * Selective on/off sonar alarms: Shallow, Deep, Fish and Zone Performance: * Instant screen updates during depth range changes for uninterrupted viewing * Internal back-up memory for key sonar settings * Rugged, reliable, completely sealed and waterproof casing, even for use in harsh saltwater environments * Full one-year warranty * Actual depth capabilities depend on transducer configuration and installation, bottom composition and water conditions. All sonar units typically read deeper in fresh water than salt water.