Shipping was a mess and expected delivery changed 3 times. Sound quality- laughable I went through some small flowing brooks that were about an inch high. Overall am really happy with it ?? The highs were controlled but textured and the bass+midrange are both great. Si pudiera la usaría para todo y en todo lugar. Well, I?ve had the pleasure of running these bad boys for 4 days now, and I guess they?ll do. Two over my favorite features are that you can charge one of them while still listening to the other one. If youre the type to wear while working out, wore them during training at the boxing gym and didnt have to adjust once, even during bag work (never had that experience before). The clarity and dynamic range is stunning.