This is a headset that displays 5cm long and 1cm thick and 1.7 cm wide, it remains very discreet especially if you have long hair, it hides in the mass. The ear mold is very comfortable and very stable. I first tested my iPhone 6: pairing was done without problem (without reading the instructions besides it's super simple). The connection was perfect with my interlocutors whether indoors or outdoors (even in high winds). I then told this little machine my daughter who has recovered an old Nokia phone that supports Bluetooth, again pairing was no problem for my daughter and it's a bargain because the phone does not allow his interlocutors to hear (a little annoying!). With this headset, the connection is perfect 5/5, I am satisfied not need to change the phone he returned a second life ...