Equipped with a GMT hand, this watch features Grand Seiko’s unique Spring Drive caliber, which combines the motive force of a mainspring with the high precision of a quartz watch. The second hand movement over the black dial, further highlights a glide motion that reflects the natural and continuous flow of time itself.

The high-quality sapphire glass on the surface of the ring provides a strong sense of transparency, breadth and depth.

Exterior

• Case Material : Stainless steel
• Glass Material : Dual-curved sapphire
• Glass Coating : Anti-reflective coating on inner surface
• Lumi Brite : Lumibrite on hands and indexs
• Case size : Diameter 44mm × Thickness 14.7mm
• The perimeter of Band : 191mm
• Clasp type : Three-fold clasp with push button release

Movement

• Caliber no. : 9R66 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 : 20 bar
• Magnetic resistance : Equipped
• Weight : 177.0 g
• Other details / Features :
• 24-hour hand (dual time display function)
• 30 jewels
• Calendar-linked time difference adjustment function
• Case back with lion emblem
• Date display
• Power reserve display
• Rotating bezel (24-hour display)
• Screw case back
• Screw-down crown
• Stop seconds hand function