These actually look pretty cool, and affordable.
My understanding is that I can just use them as an external monitor, so if I'm traveling I could plug in my linux laptop and just have an external monitor to work on and could play music through them at the same time.
That sounds really tempting to me, travel work setups are always sub optimal.
I have a portable external monitor, and can bring my mechanical keyboard, and if there's a spare TV I might also use it.
But it's still not the same as a proper home setup.
Even for working on a couch, it would be nice to have a screen in front of you so you don't have to slouch.
My understanding is that they can be used standalone as a monitor, or if you want to actually do VR stuff, play VR games etc, you need to buy a "XREAL Beam" or "XREAL Beam Pro" which does the VR apps etc?
Not too sure on the differences between Air, Air 2, Air 2 pro etc, but for my requirements they would all probably be fine.