I dont see any navigation option at all in the settings, but i know that it uses iGo-primo software with maps downloaded from naviextras, here is some of the information about the navigation system:

Navigation *
Platform: iGo primo
Data carrier: Micro-SD

Display
Technology: Digital
Type: TFT
Screen size: 6.2"
Resolution: 800 x 480 pixels

Although im not so sure whether it runs on windows platform or android.
Attached are some of the pictures of the list of options in the settings menu

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