Current Production
SBGM221
GRAND SEIKO SBGM221
MSRP
$5,400 USD
Verified Aug 18, 2026
Case diameter39.5 mm
Lug-to-lug46.9 mm
Thickness13.7 mm
Case materialStainless steel
MovementSelf-winding with manual-winding
Calibre9S66
Power reserve72 hours
Bracelet or strapCrocodile leather
Specifications as published by Grand Seiko →
Last verified Aug 18, 2026