A 3-day power reserve and refined design and functions in a larger case
This model retains the Grand Seiko design, with an increased case size giving the watch a greater sense of presence.
Equipped with the 9R61 calibre, the watch will run continuously for three days when fully wound, and utilizes the latest hairspring and the MEMS manufacturing processes in its escapement to deliver higher stability of accuracy when in use.
Greater stability from the new slim-form watch case back provides an outstanding sense of security for the wearer.
|Case back:||See-through & Screw case back|
|Glass Material:||Dual-curved sapphire crystal|
|Glass Coating:||Anti-reflective coating on inner surface|
|Case size:||Diameter 42.0mm Lug-to-lug 47.9mm Thickness 13.1mm|
|Clasp type:||Three-fold clasp with push button release|
|Caliber no.:||9S61 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:||10 bar|
|Magnetic resistance:||4,800 A/m|
|Other details / Features:||
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 Seiko's expert watchmakers.
Spring Drive is a unique movement that delivers one-second-a-day precision, using just the power of a mainspring.