Our physical store on Burlingame Avenue is open again! For the time being, visiting Topper is by appointment only. Please call or text the store at 650-347-2221 to schedule your appointment from 11:30 - 5:00 PM Tuesday through Saturday. We look forward to seeing you!

Grand Seiko Spring Drive SBGA429 "Soko" US-Exclusive Edition (Deposit)
Free Gift

  • Deposit: $500.00
  • Retail Price: $5,000.00

In addition to the deposit, a separate invoice will be sent to you for the balance. If you have any questions about pricing, please contact the store during business hours at 888-730-2221.

Topper Jewelers is an Authorized Grand Seiko Dealer.

Expected Delivery: Late July

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