1. There is no switch, allowing it to completely turn off when you are not using. Packed in a bag there, the slightest bearing on the button (while it must maintain the 2 anyway), it starts .... and after it discharges ... :(
2. Under Windows7 (who has a problem in general with Bluetooth) ... it is impossible (or at least I have not found) set the proper functioning with the headset. To listen to music .... blah, talking on Skype, Zoiper or other .... an echo that makes you want to stop everything instantly.
3. The microphone is not up to the expectation, having regular son of shots, this is reported quite often ...
For an individual who has the phone as a business tool, it weighs heavy, despite the lack of similar products on the market.
I still finished on a good note: the sound through the iPhone is great! a bomb .... and also, it preserves the entourage of your musical preferences, which is an important point in respect for others.