Zigbee Switch 1/2/3gang with 1/2/3way

I’ve seen some zigbee switches lately that advertise the 2way feature (two switches controlling the same lamp).

I’m tempted to order some, but I still don’t quite understand how it works.
It doesn’t appear to be a physical connection (like with dumb switches).

If it’s software, does anyone know if ZHA binding is supported?
Has anyone tried it?

You haven’t provided any details about the manufacturer, model, or even where you saw them, so how are we supposed to know what you are talking about?

Have you checked if they are in the blakadder database?