SONAR: GT20-TM 8-pin trolling motor mount transducer uses CHIRP ClearVu(TM) & Traditional CHIRP Sonar to consistently display fish arches and clear pictures of objects, fish, and structures that pass below the boat Clear, colorful sonar features 7 new vivid color options to see structures and fish in all-out clarity and contrast NAVIGATION: Built-in high sensitivity GPS locates your current position precisely and quickly, maintaining GPS location from anywhere in the water Waypoint marking lets you mark and return to your favorite fishing hot spots View your boat's speed on the screen to ensure correct speeds when trolling through wake-controlled areas or locating a particular fish species Quickdraw 1' contours store up to 2 million acres of maps CONNECTIVITY Upgrade experience with the ActiveCaptian(R) smartphone app for the latest software and charts and transfer updates wirelessly to your chartplotter Garmin Express(TM) software allows you to download map updates from the computer to your chartplotter's SD(TM) card FISHFINDER DETAILS: Ultrascroll(R) displays fish targets at high boat speeds Fish Symbol ID identifies fish targets AutoGain Technology minimizes clutter to help maximize targets Adjustable depth line measures underwater depth of objects A-scope provides a real time display of fish passing through transducer beam Split-screen zoom shows full-size graph of sonar reading on the right and magnified portion of that graph on the left Water temperature sensor included ADDITIONAL DETAILS: Includes tilt/swivel mount and transom/trolling mounting hardware