Moi rozmówcy po drugiej stronie mówią, że podczas rozmowy przez urządzenie słyszą swoje echo. Jakość okropna. Nie polecam
My interlocutors on the other side say that an echo is heard when we are talking through the device The voice quality is terrible.
Product looks good. The sound from speaker is ok also making connection is without problem (i used android). Problem is background sound for the caller on the other side and sometimes echo effect. About background sound - everything is ok during talking but in the silents parts the caller on the other side can hear some noise.