I read several reviews on different website including cnet, many of them downgraded it because they found that every time they switched it on they had to re-pair it with their phone. I think this comes down to reading the instructions, most bluetooth devices are paired by pressing and holding the power button, if you do that with this one it just searches for available devices. To permanently pair, you press and hold the CALL button, then pair your phone. Once done, it sticks and works flawlessly. I also have a Nexxus tts device, it's just as good but cheaper.