Family: UN-6xx
The UN-631 (cal. UN-631) is an in-house manual-winding movement introduced by Ulysse Nardin in 2019. It belongs to the UN-6xx family of manufacture calibers developed in-house. The movement remains in production and is used in the brand's contemporary collections.
Last updated 8 Jul 2026Suggest a correction
TECHNICAL SPECIFICATIONS
Movement Type
Manual Winding
Display Type
Analog
Winding
Manual
QUICK FACTS
BRAND
TYPE
Manual WindingSTATUS
In ProductionMANUFACTURE
In-houseLAUNCH YEAR
2019CALIBER FAMILY
UN-6xxALSO KNOWN AS
cal. un-631
FOR WATCH DEALERS
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