Garmin GPSMAP 1222 - Worldwide Basemap - These chartplotters feature large, bright screens coupled with quick and easy-to-use keypad interfaces with user-programmable keys and multifunction control knobs to help you navigate with ease. 12-inch color display with keypad interface and multifunction control knob; High-sensitivity internal 10 Hz GPS and GLONASS receiver; 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;