very useful tool - especially for the price !!

Incredible! Actually makes everything what it should. Of course, not to be compared in the intricacies of 3 to 4 times as expensive Garmin or TomTom.
Navigation: Software similar Navgear. ONLY with umlauts !! Previously had a Pearl Navi - no umlauts! So neither Munich nor Muenchen discoverable. Something is scrap. But this Navi hats really it. Quickly finds the satellite and navigate afloat: route calculation faster than Garmin.
The housing is cheap plastic, not so wertig like Garmin. The foot could be a bit stronger. Everything wobbles a bit.
Music: pretty neat. Simply create folders on the SD card, copy songs. Done. Clear locating possible in folders.
Video: mp4 but with caution. wenns the device does not fit, it simply crashes or hangs from. Restart required. Can you live with!
FM Transmitter: works perfectly. But sound output jack on much better.

Benefits
++ Navi perfectly
++ Navi switches in the tunnel itself constantly Night View
++ Mp3 quite well solved, playing well
++ FM Transmitter funzt very well
++ Sound playback via FM transmitter or jack.
Easy and intuitive operation ++
++ Exchange of apps simple: drive your dream press the Anschaltknopf and you're back in the main menu (even figured out, is not in the manual)
++ POIs import via POI base works. Excellent!
++ Delivery time was shorter than shown with not even a week

Disadvantages:
- Display reflects heavily. you have a Mattierungsfolie draufziehen, then you go.
- Display a bit too dark, even at full brightness
- Voice too quiet in Navi even at full volume. Not bad on FM Transmitter
- Partially comical announcements with truncated sentences or funny words ("You go through the roundabout" - beautiful Greet the axes!). German men's voices have better words than the female voices
- TMC is missing
- No Bluetooth, therefore no Handsfree
- Map update was not possible

Conclusion: the disadvantages can live it - especially at the price. Absolutely recommendable device