Garmin Explore™ 10
This all-terrain navigator from Garmin is built for off- and on-road navigation. Garmin Overlander is very easy to sync with all routes across desktop, smartphone, and Overlander™ navigator. With the Garmin Overlander™ app, the users can download USGS quad sheets and additional maps on 64 GB of storage. It is a preloaded device with iOverlander™ points of interest (POIs) and Ultimate Public Campgrounds, so it doesn't need any cell signal.