When I first received this product it worked well. After a month and a half it stopped communicating with my cell phone. I called Motorola and they told me it was guaranteed for a year and to send it back to them. The model I bought is no longer sold and they have a new one out now. They told me they will replace the blue tooth. It has been over 3 weeks since I mailed it in and I have yet to hear anything. I am happy with the blue tooth technology. But I am not happy with Motorola. They have never contacted me since I called them about the prolems I was having and have not even taken the time to e-mail be they received my old one (which I know they have by my shipping receipt I got back). My blue tooth may have been a lemon but Motorola's customer service is not up where it should be. I am still waiting for a replacement to come in. In the meantime I am using the free plug-in type I received when I bought my phone. My advice is Buy a Bluetooth, just be careful who makes it and check out their customer service.