I have had this headphone for over 3 weeks now. It looks beautiful, and has great build quality. The sound quality is great too. In fact I feel the sound quality is the same as that of a cheaper version of Sony headset - DRBT101/BLK Stereo Bluetooth Headset. I used to have that headset until recently.There are two problems with this headset (DRBT50) which I did not have with DRBT101. They area) While listening to music using the headset and if you walk away to a different room while the music source (in my case, the mobile phone) is left behind, the sound is interrupted as if it is trying to buffer. The music then plays for a few seconds and then gets interrupted again. The process continues as long as you are away in a different room.b) During the interruptions, the pitch of the song suddenly goes up thus playing at a higher and uneven pitch which degrades your listening experience.I found that these problems go away if you walk back to the source (mobile phone).The battery has been good (has been going well without any charging after the initial one).