Current Production
SBGA437
GRAND SEIKO SBGA437
MSRP
$5,000 USD
Verified Aug 18, 2026
Case diameter40 mm
Lug-to-lug46.6 mm
Thickness12.3 mm
Case materialStainless steel
Water resistance100 m
MovementSpring Drive
Calibre9R65
Power reserve72 hours
Specifications as published by Grand Seiko →
Last verified Aug 18, 2026