Family: 630x
The 6309 is described in Seiko's own documentation as a Highly Reliable Movement, featuring stabilized accuracy and high reliability incorporated from the 61XX series. Servicing was improved through a new balance hairspring holding device that clamps directly in the terminal (no stud), simplified movement structure reducing parts count, and interchangeability of some parts with the Cal. 61XX series.
TECHNICAL SPECIFICATIONS
Movement Type
Automatic
Display Type
Analog
Shock Protection
Diashock
More Seiko movements
QUICK FACTS
BRAND
TYPE
AutomaticSTATUS
DiscontinuedMANUFACTURE
In-houseCALIBER FAMILY
630xCOUNTRY
JapanALSO KNOWN AS
cal. 6309seiko 6309
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