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Grand Seiko
Grand Seiko Spring Drive SBGA429 "Soko" US-Exclusive Edition

Grand Seiko Spring Drive "Soko" US-Exclusive Edition


Grand Seiko
  • $5,000.00
or call: +1 (650) 347-2221
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  • Extended Warranty more info

A US-Exclusive with a handsome, season-inspired twist

The SBGA429 is the latest addition to Grand Seiko's USA-Exclusive 'Seasons' (or 'Sekki') collection, highlighting the ever-changing nature of the seasons.

Each timepiece, design and movement in the ongoing collection is a tribute to Japanese nature and expresses the natural and continuous flow of time. Reference SBGA429 is powered by Grand Seiko's 9R65 Spring Drive calibre, which combines the motive force of a mainspring found with the high precision of a quartz watch.



  • Case Material : Stainless steel
  • Glass Material : Dual-curved sapphire
  • Glass Coating : Anti-reflective coating on inner surface
  • Case size : Diameter 39mm × Thickness 12.5mm
  • Strap: Stainless steel bracelet & additional crocodile leather strap


  • Caliber no. : 9R65 Instructions
  • Movement Type : Spring Drive
  • Power reserve : Approx. 72 hours(3 days)
  • Accuracy : ±1 second per day / ±15 seconds per month (average)


  • Water resistance : 10 bar
  • Magnetic resistance : Equipped
  • Other details / Features :
    • 30 jewels
    • Exhibition caseback
    • Date display
    • Power reserve display
    • Screw case back
    • Screw-down crown
    • Hacking seconds function

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