These Bluetooth headphones are worth every penny, who have tasted it. From Shipping begun to packaging as Amazon usual very fast and frustration-free. Although the manual is only available in English and Chinese, you have to be a tech guru that to make the pairing without these instructions. The connection was very fast and very stable, which is very arrives on stability on the sending device. With a tablet, there were several crashes, when switching on the phone there was absolutely nothing to complain about. The range is very good, in spite of two walls and about 8m distance absolutely stable reception. For this, the headset is also provided with a pause button as well as the ability to select the previous or next track. Also, a microphone is installed, can thus be used as a headset. Since I love to dance and techno hear, I was excited because of the previously read reviews, whether they are really strong bass. And I have to say, yes, they are there! Even moderate volume they are absolutely top. Have tried many headphones and headsets obsessed and have to say I would have bought these headphones first, I would have all that can save previously. On the subject of comfort I can say that they cause even after 2-3 hours of wearing absolutely no problems or bruises, which it determines arrives here on the respective head shape. Therefore, there is of me a full purchase recommendation.