The Unitas 6310, also known as the 'Wehrmachtswerk' (German Military Movement), is a vintage Swiss manual-wind caliber from the 63xx series. Early versions featured a fixed stud carrier, while later production moved to a mobile stud carrier design. The calibers 6310 through 6318 represent varying bridge shapes within the same basic architecture. This 13-ligne movement was widely used in 1950s military-style wristwatches and represents an important part of post-WWII watch production. The movement was produced by E. Marten and other manufacturers using Unitas ebauches.
Movement Type
Manual Wind
Jewel Count
15 jewels
Power Reserve
40h
Frequency
18,000 vph (5 Hz)
Diameter
29mm
Height
4mm
Display Type
Analog
Shock Protection
Incabloc
BRAND
UnitasTYPE
Manual WindSTATUS
DiscontinuedMANUFACTURE
ÉbaucheLAUNCH YEAR
1950CALIBER FAMILY
63xx WehrmachtswerkCOUNTRY
SwitzerlandALSO KNOWN AS