Manual winding Spring Drive with Dual-Spring Barrel system for extended power reserve. Slimmer profile than automatic variants, designed for elegant dress watches. Achieves accuracy of ±15 seconds per month while maintaining the signature glide motion seconds hand.
Movement Type
Spring Drive
Jewel Count
30 jewels
Power Reserve
72h
Frequency
28,800 vph (8 Hz)
Diameter
28.6mm
Height
5mm
Display Type
Analog
Shock Protection
Diashock
BRAND
Grand SeikoTYPE
Spring DriveSTATUS
In ProductionMANUFACTURE
In-houseLAUNCH YEAR
2016CALIBER FAMILY
9RCOUNTRY
JapanALSO KNOWN AS
