Enhanced accuracy version of the Spring Drive chronograph GMT. Features improved accuracy of ±10 seconds per month (±0.5 second per day) compared to the 9R86. Column wheel chronograph with vertical clutch and READY/START mode for professional-grade timing operations.
Movement Type
Spring Drive
Jewel Count
50 jewels
Power Reserve
72h
Frequency
28,800 vph (8 Hz)
Diameter
32mm
Height
7.1mm
Display Type
Analog
Rotor Type
bidirectional
Winding
Magic Lever
Shock Protection
Diashock
BRAND
Grand SeikoTYPE
Spring DriveSTATUS
In ProductionMANUFACTURE
In-houseLAUNCH YEAR
2014CALIBER FAMILY
9RCOUNTRY
JapanALSO KNOWN AS
