Evolution 9

Specifications

About this reference

With its textured pattern, the blue dial expresses the surface of Lake Suwa. This body of water is located near the place where Spring Drive watches are crafted, the Shinshu Watch Studio, which is housed in a Seiko Epson facility in the city of Shiojiri. 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. Both the case and bracelet are made of Ever-Brilliant Steel, which shines brighter than conventional stainless steel while offering exceptional corrosion resistance. 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 37.0mm Lug-to-lug 44.3mm Thickness 11.4mm; Band width: 20mm; Clasp type: Micro-adjustment clasp; The perimeter of Band: 195mm. Movement: Caliber no.: 9RB2 Instructions; 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: 148 g; Other details / Features: Screw-down crown 34 jewels Power reserve indicator.