Absolute Billigstware! Not recommendable. Have the part used for 2 days and then moved to the trash. The headset is no comparison to the original. It scratches and is understood almost nothing. The part remains at least not jam in my ear. If I einstöpsle the headset, my phone gives malfunctions. It decreases the volume arbitrarily, thus preventing the Telfonieren from start to finish. Whoever brings a garbage circulated and sold, should be ashamed.