Grand Seiko Heritage Collection 44GS Automatic with Manual Winding Mechanical Hi-Beat 36000 40mm Watch lifestyle-hover Caliber 9R86: The Spring Drive

Caliber 9R86: The Spring Drive technology generates energy like a traditional mechanical watch but incorporates an electronic regulator for unparalleled precision

Power Reserve Indicator: The watch has a power reserve of approximately 72 hours (3 days)

while the caseback is stamped with the Constellation Observatory medallion

SBGY009 is powered by the manual-winding Spring Drive Caliber 9R31

Grand Seiko Heritage Collection 44GS Automatic with Manual Winding Mechanical Hi-Beat 36000 40mm Watch lifestyle-hover Caliber 9R86: The Spring DriveGrand Seiko Heritage Collection Watch with a stainless steel case and bracelet and a 40mm coloured dial. In Japanese culture, light and shadow are treasured. The Japanese have always loved the delicate nuances created by the harmony of light and shadow and the infinite gradations between them, which is why they play such an important role in traditional arts like Sado, the tea ceremony and Kado, the art of flower arrangement. Grand Seiko is suffused