View Satellite-enhanced Maps-The 420’s basemap contains worldwide
satellite images in place of more traditional maps, and its SD card slot
makes it easy to add additional maps without connecting to a computer. With
fewer keys and a simple, intuitive interface, the 420 makes navigating your
way through the water easy.
Add Sonar-Where applicable, the sounder version, GPSMAP 420s, comes with a
powerful dual frequency transducer that clearly paints depth contours,
fis…