The 6R31 is a no-date version of the 6R35 with 70-hour power reserve. Features ETACHRON regulator and Spron 510 mainspring. Used in Seiko watches where a clean, date-free dial is desired with the premium 6R movement.
Movement Type
Automatic
Jewel Count
24 jewels
Power Reserve
70h
Frequency
21,600 vph (6 Hz)
Diameter
27.4mm
Height
5.25mm
Display Type
Analog
Rotor Type
bidirectional
Winding
Magic Lever
Shock Protection
Diashock
BRAND
SeikoTYPE
AutomaticSTATUS
In ProductionMANUFACTURE
In-houseLAUNCH YEAR
2019CALIBER FAMILY
6RCOUNTRY
JapanALSO KNOWN AS
