I have one kicking around somewhere
Probably only bluetooth 1.0 since its getting on for 4 - 5 years old.
As for features depends on what OS its being used with and what the drivers are
I have the newer bluetooth 2.0 with EDR built-in to my laptop so I've never bothered to replace the dongle, seldom use it as I just pop the memory card from my phone in the pc's card-reader (much quicker

)