You are looking at an interesting American Flyer COMPATIBLE steam engine from American Models. This 4-6-2 K-4 looks like new and is ready to run. This unit was originally released back in 2000, I believe. It has the electronic whistle and bell, but it is not digital like modern Railsounds.
Still, this engine is a tough find, and one not modeled often in S. This has been sitting in a box for years untouched.