Grand Seiko Evolution 9 Collection Diver’s watch with 5-day Spring Drive movement
The coastal waters of Japan are influenced by the flow of the Kuroshio Current, one of the world’s major ocean currents, as well as by the nutrient-rich waters of the Oyashio Current, creating one of the world’s most diverse ocean regions. The dynamic undulation of the waves of these ocean currents is expressed in the powerful dial pattern of this watch, which also uses a unidirectionally rotating bezel with an insert made of ceramic. However, unlike last year’s Spring Drive diver’s watch, which was black, this year the dial and bezel are in Grand Seiko blue.

Caliber : 9RA5
Movement Type : Spring Drive
Accuracy : ±10 seconds per month (±0.5 second per day)
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 : Three-fold clasp with secure lock & push button release, solid & slide adjuster
The perimeter of Band : 185mm
Magnetic resistance : 4,800 A/m

Other details / Features:

• Unidirectional rotating bezel
• Screw-down crown
• Three-fold clasp with secure lock
• Power reserve indicator