Case Material : Stainless steel with ceramic bezel Glass Material : Dual-curved sapphire crystal Glass Coating : Anti-reflective coating on inner surface Lumi Brite : Lumibrite on hands and indexes Case size : Diameter 40.5mm × 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 Weight : 172.0 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
- ・Screw case back
- ・Screw-down crown
- ・Stop second hand function
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.
Housed in a water-resistant stainless steel case with ceramic bezel, a 24-hour GMT hand and Lumibrite indices for exceptional precision and legibility complemented by the smooth motion glide of Spring Drive.