Most important characteristics of the Kaweco Special are the plain and simple octagonal design and the handy push button. It is long and thin and was made out of ebonite, later turned celluloid was used. The Special series has proven to be a long-lasting working tool with a reasonable price. Soon this succesful product series was expanded to include fountain pens as well.

Modern aluminium and brass is purposely used today. Sturdy and reliable mechanisms are worked into the pens, which have already sold millions of times.