While technically still functional, each time the plug disconnects within the headphones, it causes loud scratchy noises which would frequently give me headaches and make me stop what I was doing. Decided to buy the folding ones to see the difference. Remember the sequence of connecting the two cables. Lackluster sound: On my receiving end, both bluetooth devices sounded fine. Excelente calidad viene con sus tornillos, funcional y práctico I clicked back together but it can be easily broken. Being wired, of course, means you do not have lag issues or having to worry about dying batteries. Kept draining fast. but nope! Im Flur sieht es nicht schön aus.