Can someone explain to me what's the different between the Nikon Communication UT1 and WT-5.

I know that the UT-1 can transfer still images & videos from your DSLR to your computer over an Ethernet connection.
But with the WT-5, it can do the same over a wireless network.

Am I right to say both devices transfer images to a computer except one is through an Ethernet connection and the other can be done on a wireless network??

Please clear my doubt...