Responsible for excellent voice quality, the microphones are installed smoke suppressants. Whether clear outside in windy conditions, the car with road noise or office with loud colleagues or radio, I'll always well understood and heard.
It is also irrelevant with which smart phone or IP phone support in which I associate with Bluetooth me, the voice quality is always excellent.
The range was also an issue for me. After 10m and a wall, connected via IP Phone from Alcatel, is still a conversation with temporary break possible.
If the use smartphone also has BT4.0, you will benefit from the significant power savings.
But a problem I've finally has. The headset will not work properly on my ears. The bracket I get simply not bent so that it does not hurt, even after an hour wear. The accompanying Ohradappter I'm not used to always have the feeling that fall out while running. Well I sit mostly and get more and more clear it.
Oops, now I'm still a bit more written than I wanted, I'm just excited about what is not commonly done.