Not really functional

The interface is relatively easy to use. The graphics are clear and synoptic. The synthesized voice gives important details such as directions to follow the signs.
However, this model suffers from two problems that greatly diminish the usefulness:
1. Sometimes it signals a change of direction (eg a device output to Paris) only when moving at the intersection (ie too late when traveling at over 35 km / h), and often without having advised before tightening to the right or left to change direction better.
2. This is my first GPS; I naively thought they optimisaient all the route based traffic such as my laptop. In the Paris area, a GPS that has not this feature is pretty much useless.

Moreover, I have struggled for updating maps, because we must ensure that the USB cable is pressed the device side bottom. Otherwise, there will be a connection, but the software will not recognize the device.