Current Production
STGK031
GRAND SEIKO STGK031
MSRP
$6,600 USD
Verified Aug 18, 2026
Case diameter30 mm
Lug-to-lug36.2 mm
Thickness10.5 mm
Case materialStainless steel
Water resistance100 m
MovementSelf-winding with manual-winding
Calibre9S27
Power reserve50 hours
Specifications as published by Grand Seiko →
Last verified Aug 18, 2026