These sound amazing but one major flaw at least in my pair. When i used them to work out after a few mins they would shut off all the sudden, and thats it u got no tunes in the middle of your workout :( I’m thinking because of sweat they are not as moisture resistant as advertised. They work fine in my office and never shut off, going on 1.5 yrs battery still holds a decent charge. They comfortable in my ears and don’t hurt. It connects perfect on my iphone as well. It may lack some of its build quality since now some plastic parts are starting to fall apart and brake. So not sure if the price is worth it for what they last (for me 1.5 years) unless you super baby them. PROS: - Great sound - Comfortable to wear - excellent iphone connection CONS - sudden shut off - built quality - price