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Grand Seiko SBGN027 SBGN027G
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Manufacturer details checked

Grand Seiko

Grand Seiko sbgn027g

Exact manufacturer reference15 recorded specifications
Exterior
Stainless steel
Case back
Screw case back
Glass Coating
Anti-reflective coating on inner surface
LumiBrite
Lumibrite on hands and index(es)
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Specifications checked against the linked manufacturer page. The image source and display method are identified with the illustration.

Manufacturer specifications checked for this reference

These specifications were checked against the manufacturer page for this exact reference.

Exterior
Stainless steel
Case back
Screw case back
Glass Coating
Anti-reflective coating on inner surface
LumiBrite
Lumibrite on hands and index(es)
Case size
Diameter 39.0mm Lug-to-lug 45.9mm Thickness 12.3mm
Band width
19mm
Clasp type
Folding clasp with push button release
The perimeter of Band
203mm
Caliber no.
9F86 Instructions
Movement Type
Quartz
Accuracy
±10 seconds per year
Water resistance
20 bar
Magnetic resistance
4,800 A/m
Weight
151 g
Other details / Features
Screw-down crown 24-hour hand (dual time display function) Calendar-linked time difference adjustment function
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Checked 2026-09-27 · Regional scope: manufacturer Europe · Manufacturer specifications; individual watches may vary.

Original manufacturer wording is retained for source data without a reviewed translation.

Recorded discovery details.

Reference token
sbgn027g
Collection candidate
Not established
Family candidate
Not established
Product type
Watch candidate

Official discovery source

The exact token was retained from a stored official manufacturer URL or feed. The source supports discovery, but does not by itself verify every model detail.

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Source record: grand-seiko-official-batch-20260924 · Manufacturer details checked; editorial publication pending.