Product Overview
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
Other Specifications:35 jewels, Screw case back, Screw-down crown
Watch Function:GMT
Water Resistance:20 bar
Weight:180.0g
LumiBrite:Lumibrite on hands and indexes