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
Exterior:Stainless steelCase back:Screw case backGlass Material:Dual-curved sapphire crystalGlass Coating:Anti-reflective coating on inner surfaceLumiBrite:LumiBrite on hands and index(es)Case size:Diameter 44.0mm Lug-to-lug 50.8mm Thickness 14.7mmBand width:21mmClasp type:Three-fold clasp with push button releaseThe perimeter of Band:191mm
Movement
Caliber no.: 9R66 Instructions
Movement Type: Spring Drive
Power reserve: Approx. 72 hours (3 days)
Accuracy: ±15 seconds per month (±1 second per day)
Functions
Water resistance: 20 bar
Magnetic resistance: 4,800 A/m
Other details / Features: