This helmet that connecting via Bluetooth (usb cable is only for charging), we are in trouble in case of connection problems. And it is unfortunately what happened to me, brand new helmet, I activate the bluetooth ... but neither my PC (win7) nor my phone (Nokia N8) do not detect bluetooth signal! So in sum is the earpiece is not compatible with my bluetooth devices, or it does not work at all. But considering the price, it does not surprise me that it is failing ... ^^ So you see if you take the risk ...