"A Must buy, better than the Jawbone & Plantronics 665"4.5 starson by Genjinaro
Pros: Great call quality, small, easy to use, Stereo Bluetooth, in-ear earbud fit (sound isolation).
Cons: Sound is abit soft for music, Lacks bass, no AAA pen charger, pricey.
Summary: I have a habit of only buying high-end bluetooth headsets to assure I get the best quality and I must rate them in this order.
I find the Jawbone nice but too large & hard to fit & the 665 isn't loud enough, range sucks & is easily defeated by the wind on both ends of the call & had bugs with the LED but its saving grace was its use in quiet environments & the AAA charger.
The 855 on the other-hand, aside from lacking the AAA pen charger, addresses many of the gripes I mentioned above in a sleek package.
The in-ear earbud style of this headset helps you hear the caller even better & it is louder than the 665 so if you were thinking of upgrading, do so. It would be worth the premium.
Jawbone users can upgrade too if they find that the Jawbone is too awkward to fit, a bit on the large side & you want AD2P, this is for you as well.