I have informed several weeks in detail about the various BT headphones and could also partly even hear yourself. Have finally decided on the Jabra Revo because my speakerphone from Jabra in the car for many years is working very well. The headset makes a high-quality impression, he has an excellent price / performance ratio, it looks good (I think), sits well on the ears and the sound quality is quite ok for my purposes. I use it on the road and especially during exercise. Phone conversations I have so far only slightly so, but I think that of course is good. The Bluetooth connection with my iPhone is very good. Battery I can not say anything yet. In short, strong buy recommendation!