Grand Seiko Sport GMT
Ref. SBGE257current
What is the Grand Seiko Sport GMT?
Grand Seiko Sport GMT SBGE257 self-winding mechanical watch features a 40.5mm stainless steel case surrounding a ceramic bezel, green sunray dial on a stainless steel bracelet with a three-fold clasp with push button release. This watch is powered by the caliber 9R66. Functions include hours, minutes, seconds, date, power reserve indicator, and GMT. This watch is water resistant to 200m. The 1916 Company is an authorized dealer for Grand Seiko and this watch includes the full manufacturer's warranty.
VerifiedUpdated 2026-03-04
Case Details
| Diameter Mm | 40 mmmedium |
| Thickness Mm | Unknownlow |
| Lug To Lug Mm | Unknownlow |
| Material | Stainless Steelmedium |
| Shape | Roundmedium |
| Bezel | Ceramicmedium |
| Crystal | Sapphiremedium |
| Caseback | Solidmedium |
| Water Resistance M | 200 mmedium |
Diameter Mm
40 mmmedium
Thickness Mm
Unknownlow
Lug To Lug Mm
Unknownlow
Material
Stainless Steelmedium
Shape
Roundmedium
Bezel
Ceramicmedium
Crystal
Sapphiremedium
Caseback
Solidmedium
Water Resistance M
200 mmedium
Movement
| Caliber | themedium |
| Manufacturer | Grand Seikolow |
| Winding | Automaticmedium |
| Frequency Vph | Unknownlow |
| Power Reserve Hours | Unknownlow |
| Complications | Date, Gmt/World Time, Hours And Minutes, Power Reserve Indicator, Secondsmedium |
| Base Caliber Notes | Unknownlow |
Caliber
themedium
Manufacturer
Grand Seikolow
Winding
Automaticmedium
Frequency Vph
Unknownlow
Power Reserve Hours
Unknownlow
Complications
Date, Gmt/World Time, Hours And Minutes, Power Reserve Indicator, Secondsmedium
Base Caliber Notes
Unknownlow
Dial
| Color | Greenmedium |
| Marker Style | Indexmedium |
Color
Greenmedium
Marker Style
Indexmedium
Strap & Bracelet
| Type | Braceletmedium |
| Material | Stainless Steelmedium |
| Clasp | Folding Bucklemedium |
Type
Braceletmedium
Material
Stainless Steelmedium
Clasp
Folding Bucklemedium
Key Specifications
Diameter40 mm mm
ThicknessUnknown mm
Water Resistance200 m m
Movementthe
Power ReserveUnknown hrs
MSRP$6,900
MSRP
$6,900
fixed
Buy for $6,900
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