Grand Seiko SBGM253
Limited
GRAND SEIKO SBGM253
Grand Seiko SBGM253 Specifications
Exterior
Case MaterialStainless steel
Case BackSee-through with 6 screws
Glass MaterialBox shaped sapphire crystal
Glass CoatingAnti-reflective coating on inner surface
Band MaterialSilver stainless steel bracelet
Bezel MaterialFixed polished stainless steel
Dial ColorLight blue dial sunburst texture with engraved gold tone Grand Seiko logo below the 12 o’clock position and Automatic GMT logo at 6 o'clock position
Dial HandsTempered silver tone hour, minute, second hand and blue colored GMT hand with Zaratsu polished
Dial MarkersSilver tone batons indexes with Zaratsu polished
CrownScrew down at 3 o'clock position
Case sizeDiameter 39.5 mm × Thickness 13.7 mm
Lug to lug46.9 mm
Band width19 mm
The perimeter of Band192 mm
Clasp typeThree-fold clasp with push button release
 
Movement
Caliber no9S66    Instructions
Movement TypeAutomatic with manual winding
Power reserveApproximately 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.
Vibrations28,800 vibrations per hour (8 beats per second)
 
Functions / Specifications
Water resistanceSplash Resistant
Magnetic resistanceEquipped (4,800 A/m)
Weight150 g
FunctionsHour, minute, second hand, GMT hand, date window at 3 o'clock
Features
  • 35 jewels
  • 24-hour hand (dual time display function)
  • Calendar-linked time difference adjustment function
  • LIMITED EDITION on the case back
  • Serial number engraved on the case back
  • Case back with lion emblem
  • Date display
  • See-through case back
Reference : Grand Seiko SBGM253G
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