Navico Elite 9 Ti Sonar/GPS Mid/High Down Scan is just what you would expect from Lowrance. Features a high definition color touch screen with built in wireless/blue tooth and NMEA 2000 network for external GPS and waypoint management. 10 Hz GPS built in that allows not only downloading software updates but also, to download custom maps for immediate use. Sonar capability is out of this world with CHIRP sonar. 2D sonar with Down Imaging.