The Bluetooth connected immediately to my PC/Win11 and the pairing was easy. Very good sound, clear. The bass is also very good. The detachable microphone is very nice and easy to put on/take off. It's very useful that you can connect via Bluetooth and with a USB cable for use or charging. Charging can be done while listening via BT. (The battery ran out while I was listening. I connected the cable to the USB socket and continued listening without any problem.) I wear a size 60 hat and the headphones fit perfectly. But even my wife, who has a smaller size, had no problem. The headphones mainly rest around the ears, so the band on top can be in the air. Anyway, they didn't cause me the usual ear pain from pressure or extended use. The ear cushions are very soft and made of good quality fabric. After 3-4 hours of use, I forgot I had them on my head. Very lightweight. Perfect purchase. They are worth every euro.