Do psps have Bluetooth?

Excuse me, could you please clarify something for me? I've been hearing a lot about PSPs lately, and I'm wondering if they come equipped with Bluetooth technology. I'm interested in knowing if I can connect my PSP to other devices wirelessly, perhaps for gaming or file sharing purposes. Is this a feature that's available on PSPs, or is it something that requires additional hardware or software? I'd appreciate any information you can provide on this matter.