These headphones are by far the most comfortable "behind-the-head" I have worn yet. I've tried several different brands & styles from LG, Motorola and Samsung. These are certainly very comfortable and functionality is decent. Bluetooth range is also excellent but if you want to HEAR your music or the person you're speaking to then DO NOT BUY THESE.Maximum volume on these is equivalent to about 50% of any other. I don't understand it and I honestly wish Motorola would recall these because this is not a fluke. I've purchased two pairs and they both do not produce the volume that users demand for music or safe, hands-free operation. Phone calls are barely loud enough if you strain yourself or find a sound-proof room to sit in. These headphones are intended to be used not only for music, but for hands-free operation while on the road, etc. It's a safety issue... If you can't hear and are forced to remove them you've lost that safety factor.I am extremely disappointed in these. The fact that you cannot hear what you want/need to hear reduces the rating for these from a potential 5-star to a 2. Everything else is perfect, but without proper volume they're absolutely USELESS.