Low skew - almost lip-sync, coupling is necessary, unfortunately, after each power-up.

The device works as described. Headphones / headset must be re-coupled, however, every time you connect.
It is advantageous that the device can be charged in parallel with the transmission also using a USB cable.
The transfer takes place with a slight time delay, is therefore not quite lip-sync. But that falls on only broadcasts where the speaker "looks out of the TV" directly eg. In newscasts or talk shows
One point deduction, there are, as no German manual was there.