The Wristwatch Field Guide

Seiko Brightz World Time SAGA159 (Titanium)

Archive · used only

The Seiko Brightz World Time SAGA159 (Titanium) is a discontinued watch with a titanium (bright titanium, diamond shield hard coating) case, finished with diamond shield hard coating. At 90 g it sits around the middle for watches in the guide. It ships on a matching exotic-material bracelet rather than a strap. No longer offered new; listed here as an archive reference for the used market.

All Seiko watchesExotic-material other watchesTitanium
Material
Titanium
Grade / type
Titanium (Bright Titanium, Diamond Shield hard coating)
Weight
90 g
Water resistance
100 m
Type
Other
Price
– · Y120,000 area at launch (JDM); secondary market only
Case diameter
42.5 mm
Thickness
11.8 mm
Origin
Japan
Movement
Solar radio-controlled quartz (world time)
Caliber
Seiko Cal. 8B54
Complications
Worldtimer, Date
Colour
Grey
Surface treatment
Diamond Shield hard coating
Caseback
Titanium
Nickel-free
Not verified (clasp or buckle material not confirmed)
Bracelet / strap
Titanium bracelet
Matching bracelet
Standard
Crystal
Sapphire, super-clear coating
Display back
No
Dial
Silver
Dial colours
Silver
Availability
No longer offered
Status
No longer in production (discontinued JDM Brightz)
Not published
Reference, Lug-to-lug, Power reserve, Hardness, Construction, Lume
Medium confidence Verified Jun 2026 Source: Jackroad (SAGA159, case chitan) / 10keiya (SAGA159 component materials) Suggested by u/StudioZanello
Facts are free to cite with a link.
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Frequently asked questions

What is the case material of the Seiko Brightz World Time SAGA159 (Titanium)?

The Seiko Brightz World Time SAGA159 (Titanium) has a titanium (bright titanium, diamond shield hard coating) case with a titanium caseback. It is recorded at medium confidence pending a maker-stated material.

What size is the Seiko Brightz World Time SAGA159 (Titanium)?

It is 42.5 mm in diameter, 11.8 mm thick, and water resistant to 100 m.

How much does the Seiko Brightz World Time SAGA159 (Titanium) weigh?

About 90 g.

How much does the Seiko Brightz World Time SAGA159 (Titanium) cost, and is it available?

It is no longer offered new; the guide keeps it as an archive reference for the used market.

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