Summary: I love the detachable earbuds for good fit. As a cyclist, I can yank out the earbuds and not have to fumble to find them. HOWEVER, these headphones stop working after a short time. I've not ridden much this year. With about 6 months of light usage, the right earbud has gone dead. This is my 3rd pair. Guess I am going to forego some fit comfort for a quality product.
Summary: I swim 2-3 miles per day. These head phones at first were fantastic....great sound and comfort. After only having them for a few weeks one side has completely quit working and the music only comes through on one side. I tried them on other devices and had the same result. So if your looking for some sweat proof earphones these would work for you but I wouldn't suggest putting them in a pool for any extended period of time.
Summary: I have been using these for running since the end of August, yesterday while running the left side stopped producing any sounds. When I finished the run I plugged the headphones into my computer to see if it was an issue with them or my phone and the symptom persisted. After moving them around I noticed that if I pulled on the cord a certain way the sound would come back intermittently which leads me to believe that these have faulty wiring.
Summary: First set lasted a few weeks in the pool then one speaker went bad. A few days later the whole unit failed. Seems that the wire harness breaks-possibly a poor design. They sent a replacement set, then the same scenario happened with them within two weeks.
Summary: I love these headphones when they work, but I have had three pairs now and they all broke in the exact same way. First pair lasted almost a year with heavy use, the second six months with moderate use, the last I've had four months and hardly used them at all. Each time, the left earpiece goes dead. Because of the fact that they consistently die the same way, on the same side, I'd have to imagine they are aware of a design flaw that they aren't fixing.
Summary: These headphones are very uncomfortable. The band around the back of the head is very rigid and hurts to wear. The earbuds do not stay in, no matter what size I tried. And underwater, the sound is TERRIBLE. Totally muffled. These were immediately returned.