The Titanium Field Guide

Grand Seiko Heritage "Shunbun"

SBGA413

The Grand Seiko Heritage "Shunbun" is a current-production dress watch with a proprietary high-intensity titanium case. At 102 g it sits among the heavier dress watches in the guide, and is priced well above the $643 median for the category. The maker states no nickel-bearing steel at any skin-contact point, across the case, caseback and bracelet.

All Grand Seiko watchesWatch dress watchesLightest, rankedPower reserveDisplay back
Price
$7,200
Material
Titanium
Grade / type
Proprietary High-Intensity Titanium
Weight
102 g (with bracelet)
Water resistance
100 m
Reference
SBGA413
Type
Dress
Case diameter
40.0 mm
Thickness
12.8 mm
Lug-to-lug
47 mm
Origin
Japan
Movement
Spring Drive (automatic)
Caliber
Caliber 9R65
Power reserve
72 h
Complications
Date, Power reserve
Colour
Grey
Surface treatment
None (alloy ~ harder than steel)
Finish technology
Natural finish
Caseback
Titanium
Nickel-free
Maker states none
Bracelet / strap
High-Intensity Titanium
Crystal
Sapphire, AR coated
Display back
Yes
Dial
Cherry-blossom pink
Dial colours
Salmon
Lume
Limited
Availability
Offered
Status
Current
Not published
Hardness, Construction, Matching bracelet
High confidence Verified Aug 2026 Source: Monochrome Maker ↗ Spec checksGrade Jun 2026Price Aug 2026Weight Jun 2026
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Frequently asked questions

Is the Grand Seiko Heritage "Shunbun" nickel-free?

On the maker's published specification, no nickel-bearing steel touches the skin: a proprietary high-intensity titanium case with a titanium caseback, plus a non-steel crown and bracelet and clasp. That is what the guide records rather than a test of the watch, so confirm the contact points with the maker before buying if you react to nickel.

What is the case material of the Grand Seiko Heritage "Shunbun"?

The Grand Seiko Heritage "Shunbun" has a proprietary high-intensity titanium case with a titanium caseback. This is confirmed against the maker spec.

What size is the Grand Seiko Heritage "Shunbun"?

It is 40.0 mm in diameter, 12.8 mm thick, 47 mm lug to lug, and water resistant to 100 m.

How much does the Grand Seiko Heritage "Shunbun" weigh?

About 102 g (w/ bracelet).

How much does the Grand Seiko Heritage "Shunbun" cost, and is it available?

It is current-production and lists from $7,200.

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