I bought the device Warehouse for my father. The came after one Demonstrate thus immediately clear, although he did not care much with technology. In this respect, it has passed the test. However, the voice prompts are confusing in some situations. Slight right even though it only goes from grade. However, everything is very accurately displayed on the display. With 2 long journeys it worked as expected, and the traffic jam bypass worked right away, it did not feel the need to throw it out the window.
