The Cardo scala-500 BT headset is a comfortable, reliable and excellent device for BT communications in the car or an environment where your cell phone is close by. I use mine with an LG VX-8600 ( verizon), and my son uses his with an LG VX 8300, and both work flawlessly in the car, and with the phone in your pocket. But, as I have found with this device and  virtually every other BT earpiece I have tried ( quite a few BTW)....don't get too far away from your phone. Distance from the source is the enemy of Blue Tooth,but I use mine in the car, and the unit performs admirably in that environment....and I would recommend this ear piece highly.