Case Material : Stainless steel Glass Material : Dual-curved sapphire crystal Glass Coating : Anti-reflective coating on inner surface Case size : Diameter 40mm Lug-to-lug 46.6mm Thickness 12.3mm Clasp type : Three-fold clasp with push button release
Caliber no. : 9R65 Movement Type : Spring Drive Power reserve : Approx. 72 hours(3 days) Accuracy : ±1 second per day / ±15 seconds per month (average)
Water resistance : 10 bar Magnetic resistance : Equipped Other details / Features :
- ・30 jewels
- ・Date display
- ・Power reserve display
- ・Screw case back
- ・Stop seconds hand function
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.