[knob]

This description is wrong. It does look like a Rockchip player but the advert says "Movie Playback: Supports AMV format."

While the second advert says "Movie Playback: Supports AVI format."

I think that sometimes sellers on Ebay may try to cheat buyers to sell old type players as a Rockchip, a new EBay scam maybe.
But this one does look like a Rockchip, so this one is probably o.k.