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.

Specifications:

Exterior

• 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

Movement

• 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)

Functions

• 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