Grand Seiko Spring Drive Black Dial Bracelet Watch SBGA285G

A Simple and Compact Spring Drive, at it's most elegant. This simply finished model with no crown guard is driven by a Grand Seiko’s unique Spring Drive caliber, which combines the motive force of a mainspring with the high precision of a quartz watch. With a case size under 40mm, the watch adorns the wrist with an elegant subtlety that gives its wearer a premium feel. The slender shape of the raised indices complements the sharpness of the power reserve indicator, while the clear expanse of the dial combines with the smooth movements of Grand Seiko's original second hand. Case : Stainless steel Glass : Dual-curved sapphire Coating : Anti-reflective coating on inner surface Case size : Diameter 39.0mm×Thickness 12.3mm The perimeter of bracelet : 201.0mm Movement : Caliber 9R65 Power reserve : Approx. 72 hours(3 days) Accuracy : ±1 second per day / ±15 seconds per month (average) Clasp : Three-fold clasp with push button release Water resistance : 10 bar Magnetic resistance : Magnetic resistance

Case : Stainless steel
Glass : Dual-curved sapphire
Coating : Anti-reflective coating on inner surface
Case size : Diameter 39.0mm×Thickness 12.3mm
The perimeter of bracelet : 201.0mm
Movement : Caliber 9R65
Power reserve : Approx. 72 hours(3 days)
Accuracy : ±1 second per day / ±15 seconds per month (average)

Clasp : Three-fold clasp with push button release 

Water resistance : 10 bar
Magnetic resistance : Magnetic resistance