
Grand Seiko
Elegance
Ref. SBGM257
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Specifications
Reference
- Collection
- Elegance
- Reference
- SBGM257
Case
- Material
- Stainless steel
- Size
- 39.5 mm
Movement
- Calibre
- Mechanical
- Power reserve
- 72 hours
About this reference
In autumn, when the moon’s light fills the sky with its soft glow, drops of dew gleam in the light in a moment that captures the beauty of the season. The SBGM257 “Moondrop” expresses such a special moment with its textured blue dial. Thanks to its modern geometric spiral pattern, the dial changes in appearance based on the angle of the light, recalling how dew drops gleam in the moonlight. The intricate pattern imparts a refined sense of structure, a fitting complement to the Zaratsu-polished case and the high precision of the Caliber 9S66 GMT movement. Prized for its accuracy, beauty, and reliability, this movement enables the wearer to track two time zones simultaneously. The gold-colored GMT hand can be set to one’s home time or any time zone of one’s choosing. The local hour can be changed in one-hour increments when the crown is extended to the first click position, making time zone adjustments simple and intuitive. The power reserve is approximately three days. Exterior: Exterior: Stainless steel; Case back: See-through case back; Case back with 6 screws; Glass Material: Box shaped sapphire crystal; Glass Coating: Anti-reflective coating on inner surface; Case size: Diameter 39.5mm Lug-to-lug 46.9mm Thickness 14.1mm; Band width: 19mm; Band Material: Crocodile leather; Clasp type: Folding clasp with push button release; The perimeter of Band: 200mm. Movement: Caliber no.: 9S66 Instructions; Movement Type: Self-winding with manual-winding; Power reserve: Approx. 72 hours(3 days); Mean daily rate: +5 to -3 seconds per day Mean daily rate is a mean value of daily rates in a condition where the movement before assembly in a case is measured in six positions in a fixed manner under artificially controlled environment for 12 days.; Normal usage accuracy: +10 to -1 seconds per day. Functions: Water resistance: Splash Resistant; Magnetic resistance: 4,800 A/m; Weight: 92 g; Other details / Features: 35 jewels 24-hour hand (dual time display function) Calendar-linked time difference adjustment function.
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