Spring Drive 5Days
Lake Suwa before dawn
A five-day Spring Drive watch inspired by Lake Suwa stirred by the breeze before dawn.
To the southeast of the Shinshu Watch Studio, where Spring Drive watches are made, one will find the gently lapping waters of Lake Suwa, a constant inspiration for Grand Seiko. Take, for example, the dial of the Spring Drive SLGA021, which evokes the surface of this very body of water. When one looks upon it, they can’t help but see gentle waves wafting over the wind-swept lake in the pre-dawn stillness. And like a gentle wind on an otherwise tranquil body of water, the dark blue colour manifests differently depending on the angle at which light catches it. The watch is powered by the Calibre 9RA2 Spring Drive 5 days movement, assembled by the skilled artisans of the Shinshu Watch Studio and engineered to run approximately 120 hours (5 days) when fully wound. Like flowing water, the seconds hand moves with the quiet, natural pace of time itself thanks to the Spring Drive movement just below the dial’s surface.
|Case back:||See-through & Screw case back|
|Glass Material:||Dual-curved sapphire crystal|
|Glass Coating:||Anti-reflective coating on inner surface|
|Case size:||Diameter 40.0mm Lug-to-lug 47.9mm Thickness 11.8mm|
|Caliber no.:||9RA2 Instructions|
|Movement Type:||Spring Drive|
|Accuracy:||±10 seconds per month (±0.5 second 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.