Current Production
SBGR321
GRAND SEIKO SBGR321
MSRP
$5,200 USD
Verified Aug 18, 2026
Case diameter40 mm
Lug-to-lug46.6 mm
Thickness13 mm
Water resistance100 m
MovementSelf-winding with manual-winding
Calibre9S65
Power reserve72 hours
Specifications as published by Grand Seiko →
Last verified Aug 18, 2026
Flagged for review: US product page publishes no Exterior (case material) row