I really enjoyed these headphones until they stopped working.The design is stylish and minimalist and the sound quality rivals that of wired headsets. I'm very active, so I want a headset that I can use to listen to tunes while working out or running. I connected these to my cell phone for music and calls.After about a week of taking these everywhere, the volume turned itself all the way down and the buttons stopped working. This rendered the headphones useless. My joy at having found such a cool product turned into disappointment as I read about the similar experiences of others. Apparently this is a somewhat common occurence with these. I returned my Motorola MOTOROKR S9 bluetooth headphones for a refund.Motorola needs to take responsibility for this defect and issue a recall. Until then, I can not recommend this product. I suggest shopping around for products from other manufacturers.