This model is equipped with a specially adjusted caliber 9R15, which reduces the average monthly difference of the third mechanism "Spring Drive" to ±10 seconds, in an 18K pink gold case.
This model, which uses carefully selected crystal oscillators that have been carefully selected for aging, can only be produced in small quantities. As a sign of the specially adjusted movement, the oscillating weight is adorned with a lion patch in 18K pink gold.
The dial expresses the image of the snow of the Northern Alps, which can be seen from the Suwa region, the birthplace of Spring Drive, shining beautifully in the sunlight.
The second hand that glides over the white dial gives an impressive impression of the sweeping movement of the original mechanism.
Exterior: 18K pink gold Case back: 18K pink gold and sapphire glass
Back cover: Screw see-through back cover
Glass material: dual curve sapphire
Coating: Inner non-reflective coating
Case size: Width 39.0mm Height 46.8mm Thickness 12.5mm
Clasp: Three fold method
Arm circumference length (longest): 185mm
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 ・Nakadome 18K pink gold