Grand Seiko Heritage Collection Automatic Watch-SBGR307G
Exterior
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Case Material: Stainless steel
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Glass Material: Dual-curved sapphire
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Glass Coating: Anti-reflective coating on inner surface
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Case size: Diameter 42mm × Thickness 13.1mm
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The perimeter of Band: 205mm
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Clasp type: Three-fold clasp with push button release
Movement
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Caliber no.: 9S68
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Movement Type: Automatic with manual winding capacity
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Power reserve: Approx. 72 hours(3 days)
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Accuracy: +5 to -3 seconds per day (when static) / +10 to -1 seconds per day (normal usage accuracy)