Current Production
SBGE257
GRAND SEIKO SBGE257
MSRP
$6,900 USD
Verified Aug 18, 2026
Case diameter40.5 mm
Lug-to-lug48.7 mm
Thickness14.7 mm
Case materialStainless steel with ceramic bezel
Water resistance200 m
MovementSpring Drive
Calibre9R66
Power reserve72 hours
Specifications as published by Grand Seiko →
Last verified Aug 18, 2026