A distinctive feature of the Tempograph, which is embedded in a 45-mm-diametercase, is its retrograde seconds mechanism. This mechanism is guided by the following principle: after ten seconds the display resets and starts over again, a process realised by a special mechanism that is highlighted as the dominant accent in the centre of the watch. The wristwatch is powered by an automatic caliber, made up of 125 parts, that drives the second and minute hands. The case back is made of antireflective sapphire crystal and reveals the mechanical clockwork. Aficionados can choose between two different models, limited to 60 watches each.