Family: 1B
The Seiko caliber 1B21 a solar radio signal movement found in ladies size Seiko watches. It is has a basic 3-hander no-date layout.
Last updated 8 Jul 2026Suggest a correction
TECHNICAL SPECIFICATIONS
Movement Type
Quartz
Display Type
Analog
Winding
Solar
FEATURES
Hacking Seconds
QUICK FACTS
BRAND
TYPE
QuartzSTATUS
In ProductionMANUFACTURE
In-houseCALIBER FAMILY
1BCOUNTRY
JapanALSO KNOWN AS
cal. 1b21seiko 1b21
FOR WATCH DEALERS
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