NOMOS Glashütte DUW-4401

NOMOS Glashütte DUW-4401 is a manual-winding in-house caliber operating at a frequency of 21,600 vph, with a power reserve of 42 hours and 21 jewels. The movement features a bidirectional rotor, allowing efficient winding from wrist motion. Its distinguishing feature is the NOMOS swing system, an in-house escapement with a blued balance spring. The caliber is used in the Metro and Tangente Datum Gangreserve models.