Name: Grand Seiko Sport SBGN027 39 mm Black Dial
Brand: Grand Seiko
SKU: SBGN027
Availability: InStock

Specifications

A concise reference view of the case, dial, bracelet and movement details buyers compare first.

Diameter39 mm

MaterialStainless steel

DialBlack

Bracelet materialStainless Steel

CalibreGrand Seiko Quartz Caliber 9F86

Water resistance20 bar / 200 m

Case18 fields

Diameter	39 mm
Case length	45.9 mm
Thickness	12.3 mm
Lug To Lug	45.9 mm
Lug width	19 mm
Shape	Round
Weight	151 g
Material	Stainless steel
Bezel	Fixed
Bezel material	Stainless Steel
Bezel insert	Stainless Steel
Crown	Screw-Down
Caseback	Solid
Crystal coating	Anti-reflective coating
Water resistance	20 bar / 200 m
Tested water resistance	200 m
Water Resistance Category	Dive
Magnetic resistance	4800 A/m

Reference details5 fields

Gender	Men's
Production status	Active
Origin	Japan
Warranty	3 years
Size category	Large

Dial and bracelet10 fields

Dial	Black
Dial finish	tough quartz GMT with steel bracelet
Display	Analog
Date	Yes
Calendar	Simple
Lume	LumiBrite
Luminous display	Yes
Bracelet	Bracelet
Bracelet material	Stainless Steel
Clasp	Folding Clasp

Movement6 fields

Calibre	Grand Seiko Quartz Caliber 9F86
Calibre family	9F
Movement	quartz
Frequency	32,768 vph
Stop Seconds	Yes
In House Movement	Yes

Functions and complications4 fields

Complications	Date, GMT
Complication count	2
GMT	Yes
Dive watch	Yes

Additional details1 field

Accuracy	±10 seconds per year

Price history

Recent price movement

Current medianSAR 14,583

Lowest medianSAR 14,583

Highest medianSAR 16,969

Median delivered estimate Lowest tracked offer Full-set pricing

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Tracking 14 daily market snapshots since July 2026. The solid line shows the median delivered estimate and the dashed line tracks the lowest available offer; the full-set plot shows pricing from qualifying offers listed with both original box and original papers.

Overview

About this reference

The Grand Seiko SBGN027 is a compact 39 mm steel Sport GMT with a black dial, steel bezel, bracelet, and a solid case back. LumiBrite and the clear date-and-GMT arrangement keep the display practical, while the screw-down sport construction and 200-metre water resistance give the watch a durable, uncomplicated presence for travel and daily wear.

Its calibre 9F86 is an in-house quartz GMT movement regulated by a 32,768 Hz oscillator. Grand Seiko states annual accuracy of plus or minus 10 seconds, and the architecture adds hacking seconds, a step motor, and calendar-linked time-difference adjustment. There is no mechanical winding or power-reserve display; the appeal is the low-maintenance precision, exact hand setting, and direct usefulness of a quartz traveller.

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