Question about Xiaomi TV box Mi TV Stick with Android and HDR support

It has Android TV on it, so it probably also has the Android TV OS. And the App Store (for TV) is also on it.
It is important to make the necessary update right away.
I am totally satisfied with the MI Stick!

Is Android TV. PlayStore is available in any case

As far as I know, this is the Android TV... I have apps like Netflix, Teleboy, UPC, Plex... running...

the stick boots via Android, whether the TV OS is I can't say