The device is actually very very good. The communication is both ways really gut.Kein echo, not a bad Verbidnung. The phone can still stuck in his pocket doer backpacking. The device fits superbly in the ear, does not wobble and you do not feel. Whether with the bracket (supplied in 2 sizes) or with the ear gel (very pleasant earplugs made of soft silicone? Wa or whatever) If Dauch supplied in two versions) Bediehnung super easy. It is very good that not all the front functions as answer button, but only the top third. So you can to fit in the ear may correct without equal trigger a call (double-clicking on hook button to place a call to the last number dialed). I really informed me in detail before buying. I highly recommend this thing really tiny. The only thing I have not figured out to Nowe is the function for listening to music: Advanced Audio Distribution Profile (A2DP) According to the description, it should be available. I can not make it, however, to hear when playing music on my phone this on the headset. Too Bad. Because then 25 euros would be super. So there are only 4 stars. If anyone knows how it works, who should feel free to contact me. Thanks and have fun with really good headset.