Caliber 9S 25th Anniversary Limited Edition
Inspired by the clear blue sky as seen from the top of Mt. Iwate
A limited-edition watch commemorating the 25th anniversary of the Caliber 9S mechanical movement.
Its design depicts the clear blue sky as seen from the top of Mt. Iwate, the soaring peak visible through the windows of the Grand Seiko Studio Shizukuishi, where Grand Seiko mechanical watches are assembled. A classic form prevails thanks to this creation’s mirror-finished bezel and case, gently curved lugs with Zaratsu polishing, and a box-shaped sapphire crystal. Inside is the Grand Seiko Caliber 9S66.
Assembled at the Grand Seiko Studio Shizukuishi by skilled craftsmen and women, the self-winding Caliber 9S66 is a GMT movement that runs for approximately 72 hours when fully wound.
|Case back:||See-through case back|
|Case back with 6 screws|
|Glass Material:||Box shaped sapphire crystal|
|Glass Coating:||Anti-reflective coating on inner surface|
|Case size:||Diameter 39.5mm Lug-to-lug 46.9mm Thickness 13.7mm|
|Clasp type:||Three-fold clasp with push button release|
|Caliber no.:||9S66 Instructions|
|Movement Type:||Automatic with manual winding|
|Power reserve:||Approx. 72 hours(3 days)|
|Mean daily rate:||
+5 to -3 seconds per day
|Water resistance:||Splash Resistant|
|Magnetic resistance:||4,800 A/m|
|Other details / Features:||
Sky blue dial and tempered blue GMT hand
The blue 24-hour scale printed on the pale blue sunray dial displays the second time zone, ensuring that subtlety and legibility distinguish the anniversary edition’s design in equal measure.
A special anodized titanium oscillating weight in Grand Seiko Blue
The timeless watches has a classic profile, yet a see-through case back provides a view of the thoroughly modern 9S66 GMT movement, which has been outfitted with a special titanium oscillating weight that has been colored Grand Seiko Blue through an anodic oxidation treatment.
Automatic 3-Day Power Reserve GMT
The watch is equipped with the automatic mechanical Caliber 9S66 with GMT function, which runs for approximately 72 hours when fully wound.
The three movements at the heart of Grand Seiko
One of the world's foremost mechanical movements, the culmination of high-precision micro-engineering and the attention to detail of Grand Seiko's expert watchmakers.
Spring Drive is a unique movement that delivers one-second-a-day precision, using just the power of a mainspring.