Polycontact4 years ago000Is there an adapter from 3.5mm to 1.5mm for these headphones, I would like to connect the headphones to my Mitel Dect 622d.Show in original language (German)Polycontact4 years ago000Thanks for the comment, I didn't see that it didn't have a microphone.Show in original language (German)Commentsimonai4 years ago000Hello These headphones have a 6.3 mm/3.5 mm combination jack plug, but if you need a different size, you need to use an additional adapter. In your case, however, I am not sure if this is a sensible combination, as the headphones do not have a microphone. Regards SimonShow in original language (German)Comment