The 9F85 quartz movement features a cam and lever date changing system for the Instant Date Change Mechanism, ensuring the date flips as close to midnight as possible. The date is factory-set to change within 5 minutes of midnight.
Last updated 8 Jul 2026Suggest a correction
TECHNICAL SPECIFICATIONS
Movement Type
Quartz
Jewel Count
9 jewels
Display Type
Analog
Winding
Quartz (Battery)
COMPLICATIONS
Date
FEATURES
Instantaneous Date Change
QUICK FACTS
BRAND
TYPE
QuartzSTATUS
In ProductionMANUFACTURE
In-houseLAUNCH YEAR
1998BASED ON
Seiko 9F62CALIBER FAMILY
9FCOUNTRY
JapanALSO KNOWN AS
cal. 9f85grand seiko 9f85
FOR WATCH DEALERS
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