Reference Number
SLGB011
Nagano Prefecture is home to a number of mountains rising over 3,000 meters. The countless rivers that flow from these mountains have, over many years, created a lush, natural environment. The watch’s dial captures the enchanting scenery of the Atera River near the Shinshu Watch Studio, located within a Seiko Epson facility in Shiojiri, home of Grand Seiko Spring Drive watchmaking. The dial’s intricate gradation and blue-green coloring express this natural phenomenon with refined craftsmanship.
The watch is equipped with the Spring Drive U.F.A. Caliber 9RB2, which delivers an extraordinary annual accuracy of ±20 seconds. It also features a power reserve of approximately 72 hours (about three days) when fully wound. The case and bracelet feature Ever-Brilliant Steel, a stainless-steel alloy renowned for its exceptional corrosion resistance and bright hue.
TECHNICAL SPECIFICATIONS
Exterior
Exterior: Ever brilliant steel, Caseback: Ever brilliant steel and sapphire crystal
Case back: See-through & Screw case back
Glass Material: Box shaped sapphire crystal
Glass Coating: Anti-reflective coating on inner surface
Case size: Diameter 40.0mm Lug-to-lug 47.2mm Thickness 11.7mm
Band width:22mm
Clasp type: Micro-adjustment clasp
The perimeter of Band: 197mm
Movement
Caliber no.: 9RB2
Movement Type: Spring Drive
Power reserve: Approx. 72 hours (3 days)
Accuracy: ±20 seconds per year (±3 seconds per month)
Functions
Water resistance: 10 bar
Magnetic resistance: 4,800 A/m
Weight:168 g
Other details:
– Screw-down crown
– 34 jewels
– Power reserve indicator
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