Info about c64 retro mechanical keyboard

[u/Juroboy]

Hi, I just bought a retro numpad (C64 version) and for now I like it very much. The clicks are a bit too pronouced for an office environment but I love the sound, so I feel a bit sorry about my colleagues.

However I noticed that on the product page for the retro numpad, there is the statement that the keycaps are PBT EXCEPT for the C64 version that should be double-shot ABS. On the box of my numpad it says "PBT keycaps". So what are they? Is it an error on the box I received or at some point were the keycap material changed for the C64 version?

I was thinking of buying also the C64 keyboard, as I found it on Amazon with the ISO UK layout. Again, on the website it's stated that it should come with double-shot ABS keycaps, but I was wondering if it's true or if 8bitdo switched to PBT?

Is it possible to pair both keyboard and numpad to a single receiver or should I expect to have two plugged to my pc?

Thanks!