Grand Seiko Heritage Collection Black Dial Spring Drive 40 MM SS Watch SBGA467

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.   Exterior 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 The perimeter of Band :         203mm Clasp type :     Three-fold clasp with push button release