I purchased these headphones to listen to audio books on my smartphone while working around the house. The volume, even when cranked up to max, is too low to hear when any other noise is present. I could barely get 15 feet away from the phone before the audio cut out entirely. I had my husband call my cell phone while I was listening (well, trying to listen) to music. The headphones correctly answered the call but did not pause the music (phone incompatibility, not headphones fault) but my husband sounded like he was underwater and far away. He said I sounded the same (microphone is in the earpiece!). I'm returning the headphones, as I can use any of my wired headphones and just put the phone in my pocket for my purposes.
North Aurora, IL