Equipped with a special adjustment caliber 9R15 that has the average monthly difference of ± 10 seconds for the third mechanism "Spring Drive" that enables high accuracy equivalent to quartz watches while using the mainspring used in mechanical watches as a power source. Model.
It has a dignified silhouette that is typical of Grand Seiko.
By applying Zaratsu polishing on multiple surfaces, the ridges that fold over and over and the distortion-free mirror surface bring out beautiful light and shadow.
By using 18K yellow gold for the bracelet in addition to the case, you can feel the high-quality texture and comfortable wearing feeling at the same time as creating an affinity with the case.
Exterior: 18K yellow gold Case back: 18K yellow gold + sapphire glass
Back cover: Screw see-through back cover
Glass material: dual curve sapphire
Coating: Inner non-reflective coating
Case size: Width 40.0mm Length 46.2mm Thickness 12.5mm
Clasp: One-push double-opening method
Arm circumference length (longest): 190mm
Driving method: Spring drive automatic winding (with manual winding)
Drive period: About 72 hours (about 3 days) at maximum winding
Accuracy: Average monthly difference ±10 seconds (equivalent to daily difference ±0.5 seconds)
Waterproofing: Reinforced waterproof for everyday life (10 bar)
Antimagnetic: can be
Other: ・30 jewels ・Power reserve display function ・Special precision adjustment model