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Grand Seiko
Grand Seiko Evolution 9 Spring Drive 'Atera Valley' SLGA025

Grand Seiko Evolution 9 Spring Drive 'Atera Valley'

SKU: SLGA025 

Grand Seiko
  • $10,500.00

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Channeling the lush, emerald Atera Valley

Nagano Prefecture, where Spring Drive watches are manufactured, is home to a number of mountains rising over 3,000 meters. The countless rivers that flow from these mountains have, over many years, created a lush, natural environment. The Atera River carves out a deep ravine called the Atera Valley, known for its breathtaking beauty. Using the clear, emerald-green waters of the Atera River as a motif, the dial conjures the image of a stream so clear that one can see the bottom, as well as the rich, natural harmony of summertime. At the heart of this watch is the Spring Drive 5 Days Caliber 9RA2. This movement provides up to 120 hours (5 days) of power when fully wound, as well as an average accuracy of ±10 seconds per month, an astounding achievement for a watch powered by a mainspring..

Representative of the Evolution 9 Style, the 40mm high-intensity Titanium case has a lower profile and center of gravity, ensuring a comfortable fit on the wrist. Its faceted mid-case features a blend of Grand Seiko's Zaratsu polishing and hairline finishing, giving the whole watch a dynamic look and feel. This level of finishing is accomplished by hand as it demands a high degree of skill.

Case

  • Case Material: High-intensity Titanium
  • Glass Material: Dual-curved sapphire
  • Glass Coating: Anti-reflective coating on inner surface
  • Case size: Diameter 40mm
  • Strap: Titanium with tri-fold clasp and push-button release

Movement

  • Caliber no: 9RA2
  • Movement Type: Spring Drive
  • Power reserve: 5 Days (120 hours)
  • Accuracy : ±0.5 seconds per day

Functions

  • Water resistance : 10 bar
  • Magnetic resistance : Equipped
  • Other details / Features :
    • ・38 jewels
    • ・Exhibition caseback
    • ・Date display
    • ・Screw case back
    • ・Screw-down crown
    • ・Stop seconds hand function