Case Material : Stainless steel Glass Material : Sapphire crystal Glass Coating : Anti-reflective coating on inner surface LumiBrite : Lumibrite on hands and index(es) Case size : Diameter 44.2mm Lug-to-lug 51mm Thickness 14mm The perimeter of Band : 195mm Clasp type : Three-fold clasp with secure lock & push button release, solid & slide adjuster
Calibre no. : 9R65 Movement Type : Spring Drive Power reserve : Approx. 72 hours(3 days) Accuracy : ±15 seconds per month (±1 second per day)
Water resistance : 200m / 660ft diver's Magnetic resistance : Equipped Weight : 201.0 g Other details / Features :
- ・30 jewels
- ・Case back with lion emblem
- ・Date display
- ・Power reserve display
- ・Screw case back
- ・Screw-down crown
- ・Stop seconds hand function
- ・Three-fold clasp with secure lock and extender
- ・Unidirectional rotating bezel
This diver’s watch is powered by Grand Seiko’s unique Spring Drive calibre, which combines the motive force of a mainspring with the high precision of a quartz watch.
The watch is water resistant to a depth of 200 meters and utilises LumiBrite for increased visibility of the hands and index. Designed for use in some of the most unforgiving environments, the rotating bezel is removable for simple maintenance while the area around the crown has been crafted to ensure that residue from dirt, sand, or seawater can be easily washed off.
With a mirror-finished case achieved through Zaratsu polishing, a lustrous rotating bezel, and multi-faceted cut indices, this watch is unmistakably Grand Seiko in its appearance, high specifications and durability.