Designed for underwater adventures, the Grand Seiko Sport collection is the preferred choice of todays avid explorer, demanding function and form in equal measures. Exterior Case Material : Stainless steel Glass Material : Dual-curved sapphire crystal Glass Coating : Anti-reflective coating on inner surface Case size : Diameter 40mm × Thickness 12. 2mm Clasp type : Three-fold clasp with push button release Functions Water resistance : 10 bar Magnetic resistance : Equipped Weight : 150. 0 g Other details / Features: 24-hour hand (dual time display function) Calendar-linked time difference adjustment function Case back with lion emblem Date display Screw case back Stop seconds hand function Offering the same functionality as the standard Calibre 9F82, Calibre 9F86 is equipped with the first GMT function of Grand Seiko. The quartz watch, redefined to the Grand Seiko Standard. To meet the high standards of Grand Seiko, the 9F quartz movement has enhanced precision and durability, made pos