GPSMAP 1222 is designed for cruisers, sailors and sailing racers who need the advanced all-in-1 solution provided by Garmin's 10-inch keyed chartplotter. Features a large, bright screen coupled with a quick and easy-to-use keypad interface with user-programmable keys and a multifunction control knob. Features 12-inch color display with keypad interface and multifunction control knob High-sensitivity 10Hz GPS and GLONASS receiver Fully network capable for Garmin Marine Network and NMEA 2000 plus NMEA 0183 support Fully network capable for Garmin Marine Network and NMEA 2000 plus NMEA 0183 support Supports optional BlueChart g2 Vision HD charts for Auto Guidance and other premium navigation features