NOMOS caliber DUW 5101—ticks automatically and doesn’t mind counting the days. The date ring is set around the movement, keeping it flat and elegant despite the complication—a patent-protected construction. The bidirectional winding rotor is highly praised for its excellent winding performance, and the whole movement for its meticulous rate. A few differences to its predecessor, the NOMOS caliber Zeta, identifiable by the denotation Deutsche Uhrenwerke, DUW for short: The NOMOS swing system is now officially setting the pace—recognizable by the tempered blue balance spring (and of course by the inscription on the three-quarter plate that reads “DUW”). Some of the technical details: decentralized seconds, stop-seconds mechanism, Glashütte three-quarter plate, NOMOS balance bridge, 27 jewels, bidirectional winding rotor, Incabloc shock protection, DUW regulation system, adjusted in six positions, tempered blue screws, rhodium-plated surfaces with Glashütte ribbing and NOMOS perlage.