NOMOS Glashütte DUW-5101

The DUW-5101 is an automatic movement manufactured by NOMOS Glashütte in Germany. Based on the discontinued NOMOS Zeta caliber, it has 26 jewels with Incabloc shock protection and features sweep seconds and a date complication. The movement incorporates the proprietary NOMOS Swing System, the brand's in-house escapement and balance spring design. It remains in production and is used in watches such as the Ahoi Date, Tangomat Date, and Club Automatic Date.