Case Material : 18k yellow gold Glass Material : Dual-curved sapphire crystal Glass Coating : Anti-reflective coating on inner surface Case size : Diameter 28.7mm × Thickness 10.9mm Band Material : Crocodile leather Clasp type : Three-fold clasp
Caliber no. : 9S27 Movement Type : Automatic with manual winding Power reserve : Approx. 50 hours Accuracy : +8 to -3 seconds per day (when static) / +10 to -5 seconds per day (normal usage accuracy)
Water resistance : 10 bar Magnetic resistance : Equipped Other details / Features :
- ・18K yellow gold clasp
- ・35 jewels
- ・Case with diamond(s)
- ・Crown with diamond
- ・Date display
- ・Mother of pearl dial with diamond(s)
- ・Screw case back
- ・See-through case back
- ・Stop seconds hand function
The new Grand Seiko automatic caliber 9S27 strikes that difficult and delicate balance between high performance and slimness that only a true “manufacture” can achieve. Its performance is outstanding, with a precision rate of +8 to -3 seconds a day and a power reserve of 50 hours. Each movement is made, assembled and adjusted by hand in the Shizukuishi Watch Studio in northern Japan and is made possible by the same high level of “manufacture” craftsmanship as goes into every other Grand Seiko mechanical watch.
The 18k yellow gold case is Zaratsu polished to give the timepiece the sparkle of quality that is the Grand Seiko signature. 42 diamonds are set into the bezel and 12 into each delicately engraved mother-of-pearl dial. One more and larger diamond is set into the crown.