While looking for watches, I came in contact with the concept of a "nurse watch". This seems to be a whole "thing". A certain kind of watch appears to be called a "nurse watch", presumably because it is mostly used by nurses.
But why? Why do nurses need a special kind of watch? Why not just a wristwatch or indeed any kind of time-keeping unit that they put in their pocket? Why a special "category" dedicated specifically for this profession?