A new tough design
A sturdy bezel, a bold vertical streak, and a form that asserts toughness while being light in style.
It is a model that incorporates a new Grand Seiko case structure following the Grammar of Design Philosophy created for a tough and rugged lifestyle. The Lumi Brite hands and markers shine in the dark with perfect harmony, which expands the user's action range. The ballistic nylon strap adopts the lightweight and sturdy cordura fabric, a first for Grand Seiko.
At the heart, high precision caliber 9F delivers higher performance and greater durability, keeping reliable time even under harsh environments.
|Case back:||Screw case back|
|Glass Material:||Sapphire crystal|
|Glass Coating:||Anti-reflective coating on inner surface|
|LumiBrite:||LumiBrite on hands and index(es)|
|Case size:||Diameter 40.0mm Lug-to-lug 47.1mm Thickness 11.8mm|
|Clasp type:||Three-fold clasp with push button release|
|The perimeter of Band:||190mm|
|Caliber no.:||9F82 Instructions|
|Accuracy:||±10 seconds per year|
|Water resistance:||20 bar|
|Magnetic resistance:||Reinforced magnetic resistance equipped|
|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.