V VarcenneWatch Wiki
Exact reference

Grand Seiko SBGE257

SBGE257 2020–present or unrecorded end
Case

Dimensions and fit

direct
Case length40.5 mm
Case width / diameter40.5 mm
Case thickness14.7 mm
Lug-to-lug48.7 mm
Lug widthNot recorded
Water resistanceNot recorded

The dimension basis is not currently recorded.

Open dimension source ↗
Movement

Calibre and mechanism

Spring Drive
Calibre9R66
Normalized calibre9R66
GenerationSpring Drive Automatic
Power reserveNot recorded
Open movement source ↗
Technical data

Conventional winding

Non-automatic; winder not applicable
ApplicabilityRequired
DirectionBoth
TPD minimumNot recorded
TPD target650
TPD maximumNot recorded

Conventional winding fields are evidence-linked reference data. They are separate from any device-specific axial-control profile.

Open winding source ↗
Market context

Market-value disposition

Date not recorded

No exact-reference public market estimate has been admitted for this record.

Market observations are separate from manufacturer specifications and are not used to fill technical gaps.