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Grand Seiko Heritage "Taisetsu"

SBGA415

The SBGA415 reworks the case of the 62GS, Grand Seiko's first automatic of 1967, whose defining trait is the absence of a bezel: the crystal is fixed straight to the case, which thins the look and lets light reach the dial from more angles. Grand Seiko has refined the wearability and the crown for today. The light grey dial depicts Shinshu, where Spring Drive watches are made, under the deep snow of Taisetsu, one of the 24 traditional seasonal phases of the Japanese year. It was first part of a US-only four-seasons collection before going worldwide. Inside is the 9R65, the first Grand Seiko Spring Drive calibre, with a power-reserve indicator, about 72 hours and plus or minus 15 seconds a month, shown through a sapphire back. The case and bracelet are high-intensity titanium, 40 mm across, 47 mm lug to lug and 12.8 mm thick under a box-shaped sapphire, and the watch weighs 102 g.

Written 28 September 2026 from Grand Seiko and Monochrome.

All Grand Seiko watchesDress watchesLightest, rankedOn a titanium braceletPower reserveDisplay back
Price
$7,200
Material
Titanium
Grade / type
Proprietary High-Intensity Titanium
Weight
102 g (with bracelet)
Water resistance
100 m
Reference
SBGA415
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
Sapphire
Nickel-free
Maker states none
Bracelet / strap
High-Intensity Titanium bracelet, folding clasp with push-button release
Matching bracelet
Standard
Crystal
Box-shaped sapphire, anti-reflective inside
Display back
Yes
Dial
Winter grey
Dial colours
Grey
Lume
Limited
Availability
Offered
Status
Current
Not published
Hardness, Construction
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 "Taisetsu" nickel-free?

On the maker's published specification, nothing that touches the skin is steel: the case, caseback, crown and bracelet with its clasp are all non-steel. The guide records what the maker publishes and has not tested the watch, so if you react to nickel, confirm the contact points with the maker before buying.

What grade of titanium is the Grand Seiko Heritage "Taisetsu"?

The maker confirms titanium but does not publish a grade. The maker calls the material High-Intensity Titanium. The caseback is sapphire.

What size is the Grand Seiko Heritage "Taisetsu"?

The case is 40 mm across, 12.8 mm thick and 47 mm from lug to lug. It is water resistant to 100 m.

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

About 102 g on its bracelet.

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

It is in production, at a list price of $7,200.

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