For the price, these headphones are just great. Connection via instant NFC. The scope is very good, no quality loss, changing room. The test was conducted in the two most remote parts of the building, no problem. Volume and call controls are well placed. There is a storage pouch for travel. The battery holds very full day continuously without problems. The comfort level is good ears. Only criticism: sides people hear you loud enough that you listen. I use it with my smartphone, tablet and all my rolls. In summary, very good buy.