You would need to contact whomever made that ad. It's not from Roku themselves. The Roku Ultra will work with any IR remote that has the correct codes for Roku players, but as far as being "fully functional" that isn't going to be true. It can mimic the buttons on a Roku remote, but things like volume control or a headphone jack on the remote won't work the same way as the Roku remote does.
Dan
Roku Community Streaming Expert
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