Grand Seiko — Heritage Collection

Grand Seiko Heritage Collection SBGA439 Spring Drive

Official Grand Seiko Boutique Online product page identifies SBGA439 as a Heritage Collection Spring Drive model with stainless-steel 40.0 mm case, caliber 9R65, 72-hour power reserve, 10 bar water resistance, and midnight blue dial.

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Grand Seiko Heritage Collection SBGA439 Spring Drive
ReferenceSBGA439
BrandGrand Seiko
FamilyHeritage Collection
Produced2021–present
StatusIn production