Evolution 9

Specifications

About this reference

This Grand Seiko diver’s watch is powered by Spring Drive Caliber 9RA5 which offers an accuracy rate of ±10 seconds per month and a five day power reserve. It is made from High-intensity Titanium, a material that is 30% lighter than stainless steel and even more impervious to scratches and corrosion. To further enhance its durability, the rotating bezel is in ceramic to protect the watch from being scratched. The dial is deep black in color and has a strongly patterned surface, inspired by a particular aspect of the oceans that surround the Japanese archipelago and that are criss-crossed by water currents of great power. One such is the Kuroshio Current, also known as the Black Stream. It flows northwards past Japan towards the Arctic North Pacific and is one of the largest ocean streams in the world. The dynamic and sometimes violent tides caused by the Black Stream inspire the deep black color and richly textured surface of the dial of this new 200m diver’s watch. Exterior: Exterior: High-Intensity Titanium; Case back: Screw case back; Glass Material: Sapphire crystal; Glass Coating: Anti-reflective coating on inner surface; LumiBrite: LumiBrite on hands, index(es) and bezel; Case size: Diameter 43.8mm Lug-to-lug 51.5mm Thickness 13.8mm; Band width: 23mm; Clasp type: Extension clasp with folding lock; The perimeter of Band: 185mm. Movement: Caliber no.: 9RA5 Instructions; Movement Type: Spring Drive; Power reserve: Approx. 120 hours (5 days); Accuracy: ±10 seconds per month (±0.5 second per day). Functions: Water resistance: 200m / 660ft diver's; Magnetic resistance: 4,800 A/m; Weight: 150 g; Other details / Features: Unidirectional rotating bezel Screw-down crown Three-fold clasp with secure lock Power reserve indicator.