Questions about Logitech MX Keys Business

What is the difference to normal MX Keys?

Is the description of this item possibly wrong?

I already have an MX Key for Business, but I don't know which key technology it has. How can I find out so that I can buy a second identical keyboard? There are so many numbers on the back that it's hard to see through :D

What is the difference to the Mx Keys S? Looks exactly the same. I use a Mac and both are compatible

The description says the battery lasts up to 10 days. The features list says battery operation? What now? Battery would be an absolute no-go.

What is the difference between the MX Keys Business and MX Keys? On the digitec pictures, they both look exactly the same. And is there a picture of the keyboard with CH layout/QWERTY (would like to know whether it has a large Enter key or a narrow one)?

I received this keyboard today, but I noticed on the packaging that the Enter key no longer appears to be 2 lines high, but only one key high. On the first picture of the product at digitec, the packaging also looks like this, but the 'real' keyboard shown has a 'normal' Enter key, which is 2 lines high. (I already have a 'normal' Mx Keys (without Business) and would like to have the exact same keyboard layout...). Can someone please tell me what the Enter key really looks like on this MX Keys for Business?

Is this keyboard also Mac compatible? It doesn't say Windows/Linux in the description.

It says "QWERTY" in the "keyboard layout" (i.e. not Switzerland).... But the keyboard has "CH" in the description. Is the keyboard layout Swiss QWERTY ?

Can the keyboard be connected to an Android tablet (via BT), e.g. Samsung Galaxy S7?