I bought a blue headset for my Sony Ericsson Z520a, and I returned it because it was such a poor quality product. It would be full of static if I had it in my left pocket and on my right ear. I would lose the bluetooth signal walking 15 feet from my phone in the bedroom to my sink in the bathroom. There is not even a wall in the way, I could see my phone! It picks up every little sound in the area.  Walking home from work, my girl could hear the little crickets in the field, and a train a mile away sounded like it was right next to me. When a car would pass by, it was so loud that it actually hurt her ear. A slight wind made such a noise on her end that it 'sounded like I was in a hurricane.' So Cardo's claims about wind noise reduction and traffic noise has not been proven true to me. I returned the unit to Amazon, and was sent a black one as a replacement, and it is doing the same things. As far as the comfort goes, I found that once I bent the ear piece, it was really comfortable. In conclusion, this is a cheap headset, and you get what you pay for.