Some top some not.

I use it on my motorcycle. Small and easy to put in your pocket when leaving.
Toll is the screen with the driving data. Everything is interested a biker it.
Also works as a speedometer replacement. The update with new purchase took several hours, but works perfectly.
When selecting an external charger the trouble starts. I tried up to five USB cable and as many 5V power supplies.
There come the funniest messages, but does not load.
The already traveled distance is not deleted. I am a motorway roundabout worn wrong, then the whole roundabout was painted and I could have curves around all day in it.
When loading from the electrical system of the motorcycle while driving, there is gelegendlichen restarts. Of course, whenever a decision has to be driving. On straight roads, it usually remains on without any problems.
It's his money well worth, but might work a little better.