GPSMAP 740s is a stand-alone touchscreen chartplotter that features a brilliant 7" display, GPSMAP 740s puts all the information you need right at your fingertips. GPSMAP 740s is preloaded with U.S. coastal maps. In addition, GPSMAP 740s accepts radar input and offers full NMEA 2000 connectivity for greater convenience when adding extra sensors. The intuitive touchscreen interface makes for simple operation. The device also offers flexible brightness levels for daytime readability along with low-light dimming during night use. And with a widescreen display thats rugged and water resistant, its made to perform in any situation. Unit came with boat I purchased in 2014. Works fine. I'm upgrading to a larger B&G unit. Matching Navpod also available if interested.