The Unitas 148 is a manual wind watch movement designed for mechanical watches. It features a sub-second function and was primarily used around the year 1945. The movement's balance staffs may vary, but similarities among them allow for their application or adaptation even if a "wrong" staff is used. Additionally, the movement includes various bridge shapes designated by catalog numbers such as 175, 176, 179, 184, 191, 196, 204, 232, and 235, although specific differences between these numbers are not known.