What movement does the Grand Seiko SBGX359 use?

The Grand Seiko SBGX359 is powered by the 9F51 quartz movement.

How big is the Grand Seiko SBGX359?

The case measures 33mm in diameter, 9.1mm thick, with a 39.7mm lug-to-lug.

What is the water resistance of the Grand Seiko SBGX359?

The Grand Seiko SBGX359 is rated to 100m of water resistance.

What kind of crystal does the Grand Seiko SBGX359 have?

The Grand Seiko SBGX359 uses a Sapphire crystal.

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Grand Seiko SBGX359

Name: Grand Seiko SBGX359
Brand: Grand Seiko
SKU: sbgx359g
Availability: InStock

Ref. SBGX359G

Dress

SBGX359

2 Variants

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Retail MSRP

—

Low

—

Avg

—

High

—

Static data

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Case

33mm

Power Reserve

—

Movement

Quartz

Water Resistance

100m

Crystal

Sapphire + AR

Case Dimensions

Diameter33mm

Thickness9.1mm

Lug-to-Lug39.7mm

Lug Width15mm

Case Build

MaterialStainless Steel

Water Resistance100m

Crystal & Dial

CrystalSapphire

AR CoatingYes

Dial ColorSBGX359G

Movement

Caliber

9F51

TypeQuartz

Beat Rate—

Power Reserve—

Jewels—

HackingNo

Hand-WindingNo

ComplicationsTime only

Design Language

Dial styleTextured

BezelFixed

Bracelet / strapLug-attached bracelet

HandsDauphine

AI-detected from product image · 5/22/2026

In a nutshell

The Grand Seiko SBGX359 (ref. sbgx359g) is a quartz dress watch, with a 33mm stainless steel case, 9.1mm thick, powered by the 9F51 movement. Water resistance is rated to 100m, under a sapphire crystal.

The Grand Seiko SBGX359 is lauded for its technically advanced 9F51 quartz movement, enabling a compact 33mm x 9.1mm stainless steel case and offering ±10 seconds per year accuracy. Reviewers highlight the refined finishing of its Snowflake dial and 100 meters of water resistance. However, it comes with a US$3,200 price tag, representing a $500 increase over prior 9F models. Overall, reviewers praise the Grand Seiko SBGX359 for its compact dimensions and precise quartz movement at the specified price point.

Time + Tide

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