For non-techies ..

..so how I'm a I can only say that it can be operated really easy.
If you follow the instructions and for the memory card sucht..sie is probably plugged! If you open up the back part (there is the place for the map), you also simultaneously a stand for the device to get it set up horizontally. However, that's pretty sharp when you have to carry it a long time so open. Here now deliver even the star. The device is extremely left-heavy, which means that you can only open vertical sides if one is willing to keep the device itself or to build a kind of stand. With the attached device does not work this fact.
So for all those who work more horizontally and have the ability turn it off, it is recommended. For all you anderen..schaut order for a device that more balanced Möpglichkeiten handling gets.