Very nice accessory. Fit my ZSN-HIFI IEMs. Don't notice a loss of sound quality from the bluetooth vs cable in playback, but there is noise when it's on standby not playing any audio. The placement of the control unit is a little awkward, but the controls work fine and the mic sounds pretty good. Better audio/mic than you can get from any TWS at this price.
PL: ładnie zapakowane, estetycznie wykonane. Niestety szumy własne są okrutne :/ Czas poszukać czegoś lepszego do słuchawek, które są znacznie lepsze niż moduł BT. ENG: well packed, estethic made. But horrible sefl-noise! Time to buy something better, because earphones are much better