how do these: http://www.ebay.com/itm/New-4-ColorsWireless-Stereo-Bluetooth-HEADPHONE-HEADSET-Wholesale-Range-32-feet-/190966381342?pt=US_Headphones&var=&hash=item2c767b bb1e headphones work?

Do they have something that attaches to your computer like this thing does: http://www.ebay.com/itm/5-in-1-Wireless-Headphones-w-Microphone-Emitter-FM-Radio-/331062377241?pt=US_Headphones&hash=item4d14dafb19 product does?

I just want to know if they has a big thing that attaches to your computer the second thing does.
if not how do they work?

thanks!
so does that mean I don't need anything at all attached to my computer?
sorry I'm really dumb, I know nothing about computers