Grand Seiko Seasons: Shunbun Hi-Beat GMT Watch-SBGJ251
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 39.5mm × Thickness 14.1mm
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Clasp type: Three-fold clasp with push button release
Movement
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Caliber No: 9S86
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Movement Type: Automatic with manual winding capacity
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Power reserve: Approx. 55 hours
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Accuracy: +5 to -3 seconds per day