Case Material : Stainless steel Glass Material : Dual-curved sapphire crystal Glass Coating : Anti-reflective coating on inner surface Case size : Diameter 40mm Lug-to-lug 47mm Thickness 12.2mm Clasp type : Three-fold clasp with push button release
Caliber no. : 9F86 Movement Type : Quartz Accuracy : ±10 seconds per year
Water resistance : 10 bar Magnetic resistance : Equipped Other details / Features :
- ・24-hour hand (dual time display function)
- ・Calendar-linked time difference adjustment function
- ・Case back with lion emblem
- ・Date display
- ・Screw case back
- ・Serial number engraved on the case back
It has been half of a century since Seiko launched the world's first quartz watch, the "Quartz Astron" in 1969.
To commemorate the 50th anniversary of the first quartz wristwatch that surprised the world with high accuracy, this limited edition model is equipped with the latest quartz movement, Cal. 9F86, appearing in the Grand Seiko Heritage Collection.
It is a special model characterized by a GS blue dial, a gold second hand, and a GMT hand with a quartz mark pattern embellished with a crystal.