It is a classic mechanical typewriter, produced by the famous German typewriter manufacturer HeinrichErnemann. Known for its rugged and precise mechanical design, it was ideal for mid-20th century office and home use. Using the classic "QWERTY" keyboard layout, the character keys are divided into three lines, in addition to the basic character keys, but also equipped with space, carriage return, line feed and move up and other function keys. The design pays attention to the user experience, and the typing method is hard typing, that is, letters or characters directly hit the roller, which belongs to the mechanical typing method. The metal body and fine craftsmanship made it very popular at the time.