I can't believe the quality of these wireless headphones! I don't see any problems. They're light, comfortable, the sound quality is great! I put them through the ringer to test them out. They stayed in while I cleaned, worked out and ate. Usually chewing always pushes headphones out. Not these. Bass is good. Not too much bass, but, they have enough to really get me going. Overall, I would definitely recommend these. I'm very satisfied.