The Ulysse Nardin Dual-Time Reference 223-22 (often categorized under the San Marco collection) is a sophisticated ladies' automatic watch designed for travelers.  It features a distinctive layout with a large date and a second time zone, housed in a polished stainless steel case. 

• Case Material: Stainless steel with a polished finish. 

• Diameter: 37mm, suitable for both ladies and those preferring a mid-size classic watch. 

• Thickness: Approximately 12mm.

• Crystal: Scratch-resistant sapphire crystal with a transparent case back allowing a view of the movement. 

• Water Resistance: 100 meters (10 ATM). 

• Crown: Screw-down crown, often featuring Ulysse Nardin’s signature blue enamel cap or steel finish depending on the specific sub-variant. 

• Lugs: Distinctive fluted or curved lugs characteristic of the San Marco design.

• Bezel: Fixed, smooth stainless steel bezel (some market listings may show diamond-set variants, but the standard 223-22 is steel). 

Movement Specifications

The watch is powered by the Ulysse Nardin Caliber UN-22, a robust self-winding mechanical movement manufactured in-house. 

• Caliber: UN-22 (Automatic).

• Frequency: 28,800 vibrations per hour (4 Hz). 

• Jewels: 29 jewels.

• Power Reserve: Approximately 42 hours. 

• Features:

  • Bidirectional self-winding.

  • Instantaneous large date correction.

  • Quick-set local hour hand (forward and backward) for dual-time functionality.