The 10 in color GPSMAP 1020 keyed chart plotter has a preloaded worldwide basemap. The built in 10 Hz GPS/GLONASS receiver updates your position and heading 10 times per second. With NMEA 2000 support for autopilot capability, engine data, SiriusXM Weather and more, the GPSMAP 1020 is compatible with LakeVü HD Ultra, BlueChart g2 and BlueChart g2 Vision. It also supports all Garmin marine radar. For even more functionality, wirelessly connect to Apple (mobile digital device) for BlueChart Mobile. The chart plotter includes (2) SD data card slots, allowing for gigabytes of storage. It can be flat, flush or bail mounted.