Pretty good waterproof headphones for the money. I use them riding a PWC at speeds up to 80 mph and they sound good at all speeds. My only complaint is they don't stay in your ear as well as others. I blame the angle of the stem (or the stem being there period) which seems to help keep them from being seated snugly in your ear. I would NOT recommend these for swimmers....only those above water who need the waterproof protection.
I haven't bothered to try out the waterproof quality because as soon as I plugged them in they sounded terrible. There is no low end and they do not sit comfortably in my ear. They go in very deep to the ear and are loud and tinny yet they also feel like they would fall out easily with movement. I am sticking with the default earbuds that come with my iPhone because they have much better bass and dynamic equalization and sit in my ear better. I supposed I will just have to buy extra in case they get ruined by water (the last pair did because my ears were wet after showering).