Advances In Micro-SD Cards

It used to be that if you wanted a storage/index.html">data-storage/index.html">GPS with mapping capabilities, you had to buy one with maps pre-installed in the onboard GPS memory. With some models you had to upload to the GPS memory from a CD-ROM.
Now, with advances in micro-SD cards, it's easier to select maps you want in your GPS and upload and download details to and from the memory.
The new Garmin X-series is a good example. All the models in this series have a micro-SD expansion slot. Map enthusiasts can use this slot to install topo or marine maps, even street directories.
This capability makes any of these GPS models more versatile and easier to use on land or by sea.