for its purpose quite well

Anticipation - it is a bit strange from the operation here, but you find yourself quite at home. Likewise, the battery life is not as long as such devices from other manufacturers that are still to work with conventional batteries. The battery time is specified by the manufacturer with 9 hours. This might be true if the device is optimally adjusted by consumption, but we were so far mostly on 7-8 hours.
Since this was already known in advance to us, we like the Booster - ie an extra battery with 2600mAh in the package selected by the Navi.

The display is easy to read and operate there with the device absolutely nothing to complain about.

Thanks to the included bracelet you can wear the Navi comfortably on your wrist.

In general, we are satisfied with the device - only to be eventually taken up by the manufacturer for future developments with the battery, so that a longer life for the user.