The sharpness of precision
This bright, pure black dial is the perfect backdrop against which the diamond-cut hands and hour markers stand out in sharp relief and mark the time with Spring Drive’s remarkable one-second-per-day precision.
Thanks to Grand Seiko’s unique Spring Drive movement, the seconds hand glides silently and smoothly, with no “tick”, across the dial, perfectly reflecting the natural and continuous flow of time. The power reserve is 72 hours when fully wound and is shown on the discreet indicator next to the eight o’clock index.
|Case back:||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 46.6mm Thickness 12.3mm|
|Clasp type:||Three-fold clasp with push button release|
|The perimeter of Band:||203mm|
|Caliber no.:||9R65 Instructions|
|Movement Type:||Spring Drive|
|Power reserve:||Approx. 72 hours(3 days)|
|Accuracy:||±15 seconds per month (±1 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 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.