Are there any Bluetooth headphones w/ mic?

Hello.

Are there any Bluetooth headphones with built-in microphone?

Is it safe to wear Bluetooth headphones for a long time, not unhealthy?

Thanks.

http://www.google.com/search?hl=en&q...=Google+Search

Bluetooth radios operate at much lower power levels than phones so, not surprisingly, the radiation added by a Bluetooth headset is insignificant by comparison.
http://www.businessweek.com/technolo...50427_5651.htm
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