The delivery was really fast ... I was a bit skeptical at the low price, however, I'm a been taught better. Execution is acceptable speaking at the price and hörqualli still good at the moment. However, the Bluetooth turns off after a while I have to first get used to ... because when a new phone call input I have to switch on again ... but is a matter of habit .. and large I am excited and am going to possibly also a second set :-)