Case Material : Stainless steel with 18k yellow gold bezel Glass Material : Dual-curved sapphire Glass Coating : Anti-reflective coating on inner surface Lumi Brite : Lumibrite on hands, indexs and bezel Case size : Diameter 44mm × Thickness 14.7mm Clasp type : Three-fold clasp with push button release
Caliber no. : 9R66 Movement Type : Spring Drive Power reserve : Approx. 72 hours(3 days) Accuracy : ±1 second per day / ±15 seconds per month (average)
Water resistance : 20 bar Magnetic resistance : Equipped Other details / Features :
- ・24-hour hand (dual time display function)
- ・30 jewels
- ・Calendar-linked time difference adjustment function
- ・Date display
- ・Power reserve display
- ・Rotating bezel (24-hour display)
- ・Screw case back
- ・Screw-down crown
- ・Stop seconds hand function
The contrast between the 18k yellow gold of the bezel and the blue of the indicator ring is a new color scheme within the sport collection and a first for Grand Seiko. Inspired by the morning sun floating on the horizon, beneath the sapphire crystal bezel lies a bold expression of blue, delivering a strong sense of transparency, breadth and depth. This timepiece achieves the difficult balance of high performance and elegance.
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 blue dial, further highlights a glide motion that reflects the natural and continuous flow of time itself.