Grand Seiko — Heritage Collection

Grand Seiko Heritage Collection SBGA401 Boutique Spring Drive

Official Grand Seiko Japan product page identifies SBGA401 as a Heritage Collection boutique Spring Drive model with stainless-steel 41.0 mm case, caliber 9R65, 72-hour power reserve, 10 bar water resistance, and black radial dial.

Open in The Dial Atlas
Grand Seiko Heritage Collection SBGA401 Boutique Spring Drive
ReferenceSBGA401
BrandGrand Seiko
FamilyHeritage Collection
Produced2020–present
StatusIn production