Mechanical keyboards are computer keyboards that have switches under
each key, rather than the rubber membranes used in most common
keyboards.
Physical switches give mechanical keyboards a less "mushy" feel — every
keypress can be clearly felt, making them perfect for precise and
accurate typing.
Mechanical keyboards are incredibly popular among touch typists,
programmers, gamers, and others that rely on keyboards for their work.
My personal favorite is from Yunzii
CK75, which is super cute and aesthetic.