The Garmin GPSMAP 1643 CHO, with its sleek design, powerful processing and upgraded IPS display, this advanced chartplotter integrates seamlessly into your Garmin marine system.FeaturesEasily integrate with more engines.Connect to compatible third-party devices with digital switching and OneHelm integrations.Easily build your marine system by using our advanced network connectivity.Navigate any waters with preloaded Garmin Navionics+ charts on select models.See below your boat with built-in sonar capabilities on select models.Manage your marine experience from nearly anywhere.Included GPSMAP 1643 chartplottermicroSD card preinstalledPower cableFlush mount kit with gasketProtective coverTrim piece snap coversBackbone/drop cable (2 meters) and T-connector for the NMEA 2000 networkDocumentation