Title: Deteriorating Quality
Product review: I bought a 640 about three months ago. At first I was very happy with the quality, battery life and comfort. After the first month the battery life shortened to where I could not get three hours of talk time a day after a full 12 hour charge. The connection between the ear peace and the headset began to loosing and no longer hold its position in your ear.I called and requested a replacement and Plantronics was very quick to overnight me a new one.I've now had the new on for about a months and signs of deteriorating quality have begun. I just called plantronics and they are sending me a Voyager 510. Quite a bit bigger than the 640 but maybe I can talk for more than three hours. If I have any issues with the 510 I think my Plantronic days are over.
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