Current Production
STGK003
GRAND SEIKO STGK003
MSRP
$31,200 USD
Verified Aug 18, 2026
Case diameter28.7 mm
Lug-to-lug35.1 mm
Thickness10.9 mm
Case material18k white gold
Water resistance100 m
MovementSelf-winding with manual-winding
Calibre9S27
Power reserve50 hours
Bracelet or strapCrocodile leather
Specifications as published by Grand Seiko →
Last verified Aug 18, 2026