For the first two months this headset is just what the doctor ordered. However, after two months (12 hour daily use) you will find it disconnects itself from your phone, and then eventually it will not turn on if you happen to have it off nor will it turn off if you happen to have it on. I have tried this same headset five *5* times. Now 500 dollars later over the past year, I have decided to blackball this product. The other day I bought the Voyager Pro for 89.99 at Best Buy. I will wait to write a review, but for now it is working well and in fact, it feels better on my ear than the 510 ever did.