No problem to use! PAIR immediately (a samsung neo which is a few years); not even need to enter the code "0000". The sound is okay; the headset is very stable and the control buttons (on / off and volume + or -) are easily accessible. For cons, the document is reduced to the minimum stric (there is not even broached the USB cable) but the device working fine, ultimately, it is not too annoying. Too bad there is not a small carrying pouch provided is a device known to be nomadic!