Description
Expressing a scene of autumnal beauty
With its textured spiral dial, the SBGM257 captures a moment when the seasons are especially felt in Shizukuishi, the place where Grand Seiko mechanical watches are made. The dial vividly recalls a time of year when moonlight is reflected by drops of dew in a delicate expression of autumnal beauty. A rich contrast results from the gold-colored GMT hand and the navy-blue textured dial.
TECHNICAL DATA
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: Three-fold clasp with push button release
The perimeter of Band: 200mm
MOVEMENT
Caliber no.: 9S66 Instructions
Movement Type: Automatic 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 or Features:
35 jewels
24-hour hand (dual time display function)
Calendar-linked time difference adjustment function
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