I have the BT250 by Jabbra. I bouht it from Best Buy becuase they would let me return it within 30 days (as long as it was perfect).
It has a rechargable battery that charges in 2 hours (or so). It will last 250 hours in standby (although I have never let it run out) and I think 8 hours talktime. It has a holder that the charger plugs into. I am very technical but had NO problem pairing it with my phone. If you get it, remember to go into the details of it on the blackberry after you pair it, and list it as a trusted device so you do not have to accept it on the Blackberry every time you turn it on.
Hope that helps