That makes him the perfect name sake for model “Augustus I”. Next to the time, date and year it also shows important anniversaries for the owner and mechanically calculates the respective age. The idea of such a wristwatch-sized calculating machine is based on an invention of the Dutch watch aficionado John Twaalfhoven. Planned as special development and unique piece for the inventor this “new complicated” masterpiece now enriches the collection of LANG & HEYNE.
more info: http://www.lang-und-heyne.de/en/kollektion_augustus.html#