"yes, it works with the blackberry 7100t"4.5 starson by adumb
Pros: impressive fit and finish, study on ear, great sound quality, superlative feature set
Cons: a touch heavy (compared to the moto HS series), can't figure out how it is supposed to fit into the included hoster :-p
Summary: I couldn't stand the 'wobbly' sensation of the Moto HS820 on my ear, so I decided to give the Jabra BT800 headset a try. It certainly feels MUCH sturdier on the ear (and not just b/c it's a bit heavier), and has a very superior feature set. The caller ID screen is easy to read and the auto-volume control is VERY handy. DSP seems to work pretty well too thus far.
I read a comment about this headset not working with the BlackBerry 7100t, but that is 100% INCORRECT. My guess is that the user forgot to make the BT800 a 'Trusted' device in the BlackBerry's bluetooth menu...
Anyway, I'm happy with this headset, and am only slightly disappointed with the weight and confusing holster. Much better than just about everything else that is readily available on the market right now -- and a HUGE improvement on the last generation of 'behind-the-ear' Jabra headsets.Updated
I forgot to praise the USB-based upgrade ablity of this headset! It's very nice to see that Jabra developed this headset with a commitment to sustained support for the product...