Having previously used a Plantronics 510 Voyager for over 2 years with great success, I dropped my Voyager 510 in water and was looking at this lower priced bluetooth in hopes it would be as great. Unfortunately, it is not. As an avid bluetooth user, this model lacks the battery longetivity and call quality of the Voyager. Callers often comment that the clarity is lacking and the battery seems to die after as little as 2 hours of talk time even when charged on a daily basis. The ear bud piece is not as comfortable and definately not as secure fitting in the ear as the Voyager. I have used this bluetooth for several months now and I'm afraid I have to retire it. I am definately going to spend the extra to purchase another 510 Voyager or even upgrade to the newer Plantronics model. If you are avid bluetooth user, it is definately worth the extra expense for an upgraded model. If you are just an occasional user, this may be just fine for you.