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STGK003
3 Variants
Retail MSRP
$31,200
Low
—
Avg
—
High
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Static data
Case
28.7mm
Power Reserve
50h
Movement
Automatic
Water Resistance
100m
01
Case Dimensions
Diameter28.7mm
Thickness10.9mm
Lug-to-Lug35.1mm
Lug Width14mm
02
Case Build
MaterialGold
Water Resistance100m
03
Crystal & Dial
CrystalSapphire
AR CoatingYes
Dial ColorSTGK003J
04
Movement
Caliber
TypeAutomatic
Beat Rate—
Power Reserve50 hours
Jewels—
HackingNo
Hand-WindingNo
ComplicationsTime only
05
Design Language
Dial styleTextured
BezelFixed
Bracelet / strapLeather strap
HandsDauphine
AI-detected from product image · 5/22/2026
In a nutshell
The Grand Seiko STGK003 (ref. stgk003j) is an automatic dress watch, with a 28.7mm gold case, 10.9mm thick, powered by the 9S27 movement and a 50-hour power reserve. Water resistance is rated to 100m, under a sapphire crystal. Manufacturer MSRP is $31,200.