High-resolution 4.3-inch monochrome display</br>CHIRP Sonar plus DownScan Imaging</br>DownScan Overlay technology</br>Advanced Signal Processing</br>83/200 KHz transom mount transducer included</br></br>Product Description</br></br>Lowrance Mark-4 CHIRP Fishfinder/Chartplotter. 4.3" Monochrome LCD with Pre-loaded Base map and 83/200 KHz transom mount transducer. All-NEW?? easy-to-use 4.3-inch fishfinder/chartplotter that combines CHIRP Sonar with DownScan Imaging technology?? super-bright?? LED-backlit grayscale display?? built-in GPS antenna and high-definition mapping options. The Mark-4 CHIRP includes all of the proven features of the Mark-4 HDI Series with the addition of CHIRP sonar technology providing greater sensitivity?? improved target resolution and superior noise rejection for clearer?? easy-to-see bait fish and game fish targets -all at a surprisingly affordable price. CHIRP sonar advantages: Easier to identify and distinguish bait and game fish targets. Better target identification at greater depths. Mark fish clearly at faster boat speeds. Exclusive Lowrance Elite-4 CHIRP advantages: Lowrance-exclusive?? brilliant?? high-resolution?? 4.3-inch?? LED-backlit display. CHIRP Sonar plus DownScan Imaging -- the power of today??s leading fishfinder technologies combined