Beautiful unit with a few weak points

The Navi makes a high quality impression: big, beautiful display, is nice in the hand. It almost feels like a mini-tablet.
+: Lifetime updates, traffic subscription, optics, handling (touch screen works very well)

The negative points in my view are:
- There is no manual, I had to download and print. And the manual is kept partly very scarce.
- The key tone can not be switched off separately, they are coupled to the announcements. Either announcements and key tones are off or on.
- The speed warning has no tolerance, in 51 km / h going on beeps. Even with my simple Nokia phone
Navi can I adjust that warnings eg only at +10 km / h running.
The beeping can be off, but desirable adjustable tolerances were city / highway.

Garmin nüvi 3590LMT Traffic navigation device (12.7 cm (5 inches) touch screen, 3D Traffic, 3D junction view, text-to-speech)