The number of countries loaded into the satellite navigation system's memory depends on the size of its computer brain. Some only deal with the UK, while others will have the whole of Europe at their electronic disposal.
Don't panic, though, because most of the systems with smaller memories will come with a CD-Rom with other maps you can load up when travelling abroad. You can also update most satnav's mapping from your home computer, downloading the latest maps and information to help you avoid traffic jams and road works.
The most simple satnav systems will provide directions via arrows on the screen, but many now also give voice directions.
You will need to use your new satnav a few times to find out how early directions are given because some systems leave their commands until you are nearly at the junction where you need to turn. Think of the satnav as a new co-driver who you have to get to know.
