The quality of the optics (headphones + case) is a little low but compared to everything else it doesn't matter, the sound quality is perfect. good bass! Wife bought Beats Flex headphones and the sound is comparable if not better. The connection has a slight buzz, but it's not very noticeable unless you have severe OCD. ***Other people nearby (within 6ft) will hear the sound if you turn it all the way up. Even with the volume turned halfway, someone can still hear if they're near you (within a foot or two). I work in a steel construction. I walked through the workshop (with barriers in between) and was easily able to walk over 75 feet from the phone with clear audio. Comfort - I don't even notice it after a while (with the right liner size) Battery - haven't had any issues so far. Based on other reviews, I'm not assuming any issues with short battery life. I use 1 at a time so they always charge. Overall a great price for a product!
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