Powered by the automatic 9S66 mechanical movement with manual winding mechanism, this is a sophisticated compact watchmaking innovation through its precision controlling of the mainspring, hairspring and escapement.
Its dual-curved sapphire crystal with anti-reflective coating on the inner surface means an easy-to-read dial, alongside a remarkable blend of efficiency and precision with a power reserve of 72 hours and accuracy rate of +5 to -3 seconds per day and 200m water resistance.
Every Grand Seiko features signature high standards of precision, durability and legibility, handcrafted in Japan by Takumi artisans. Grand Seiko: beautifully, precise Japanese watchmaking, from the pinnacle of Seiko Watch Corporation’s in-house ‘manufacture.’
Movement Accuracy:-3/+5 seconds per day Calibre:9S66 Movement Type:Automatic with Manual Winding Power Reserve:72 Hours
Watch Exterior
Case Diameter:40.5mm Case Thickness:14.4mm Case Material:Stainless Steel Lug Width:20.0mm Clasp:Three-fold clasp with push button release Dial Colour:Green
Other Specifications
Crystal Coating:Anti-reflective coating on inner surface Crystal Type:Dual-curved sapphire crystal Watch Function:GMT Water Resistance:20 bar Weight:180.0g LumiBrite:Lumibrite on hands and indexes Other Specifications:35 jewels, Screw case back, Screw-down crown
One of the world's foremost mechanical movements, the culmination of high-precision micro-engineering and the attention to detail of Grand Seiko’s expert watchmakers.
9R Spring Drive
Spring Drive is a unique movement that delivers one-second-a-day precision, using just the power of a mainspring.
9F Quartz
The ultimate quartz movement. Caliber 9F incorporates several unique technologies that raise performance of quartz to the high standards of Grand Seiko.
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