It's a k-65Xr80c. Can't remember what the much older one is.
https://www.rtings.com/tv/reviews/sony/bravia-8-oled
RTings is right, it's not super bright. If you watch HDR stuff, it's better for rooms that at least block some sun (though lit SDR is fine).
As of 30 seconds ago, this is the screen when you press the power button: 
But let me emphasize, this is not default. If you're setting it up for a grandma, you or they will have to find the toggle.