I?m going to be buying a few to give away as gifts for all my girlfriends. Ich will mich nicht über die Knöpfe und funktionen auslassen, darüber wurde eig. assembling it took some time. This meant that it would always try to spring back to the shortest length on that side. however, if you dont need the microphone its difficult to move it out of the way fully because it will not swing out of the way, whereas the 9000 can easily swing up and out of the way because it is solid plastic. I went back and double checked I ordered the wrong one, with that said it works perfect I just have to manage volume in settings and I am fine with that. Bluetooth connections never satisfy, iPhone has no headphone jack anymore (thanks for nothing, Apple). Great brand and look great. As soon as I opened the box I could tell immediately they were WAY too small. Echas para él.