Current Production
SBGY013
GRAND SEIKO SBGY013
MSRP
$9,300 USD
Verified Aug 18, 2026
Case diameter38.5 mm
Lug-to-lug43.7 mm
Thickness10.2 mm
Case materialStainless steel, Caseback:Stainless steel and sapphire crystal
MovementSpring Drive Manual winding
Calibre9R31
Power reserve72 hours
Specifications as published by Grand Seiko →
Last verified Aug 18, 2026