The Titanium Field Guide

Seiko Astron GPS Solar Dual-Time Chronograph (5X83)

SSH159

The Seiko Astron GPS Solar Dual-Time Chronograph (5X83) is a current-production chronograph watch with a Titanium (super-hard coating) case, finished with super-hard coating. It is priced under the $3,300 median for the category. It ships on a matching titanium bracelet rather than a strap.

Titanium chronograph watchesUnder $3,000On a titanium braceletSolarGMT
Price
$2,500
Titanium
Titanium (super-hard coating)
Water resistance
100 m
Reference
SSH159
Type
Chronograph
Case diameter
42.0 mm
Thickness
12.4 mm
Lug-to-lug
49.5 mm
Origin
Japan
Movement
GPS solar quartz chronograph
Caliber
5X83
Power reserve
6 months (full charge)
Complications
Chronograph, GMT, Date
Case shape
Round
Case colour
Natural / grey
Finish technology
Surface hardening
Surface treatment
Super-hard coating
Nickel-free
Not verified (contact-point materials not all confirmed)
Bracelet / strap
Titanium H-link bracelet, super-hard coating
Titanium bracelet
Standard
Crystal
Sapphire
Display back
No
Dial
White (SSH159), blue (SSH161), black (SSH163)
Dial colours
Black White Blue
Availability
Offered
Status
Current
Not published
Weight, Caseback, Lume Help verify
Medium confidence Verified Jul 2026 Source: Seiko (Astron SSH159) Maker / listing ↗
Facts are free to cite with a link.
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Frequently asked questions

What grade of titanium is the Seiko Astron GPS Solar Dual-Time Chronograph (5X83)?

The Seiko Astron GPS Solar Dual-Time Chronograph (5X83) has a Titanium (super-hard coating) case. It is recorded at medium confidence pending a maker-stated grade.

What size is the Seiko Astron GPS Solar Dual-Time Chronograph (5X83)?

It is 42.0 mm in diameter, 12.4 mm thick, 49.5 mm lug to lug, and water resistant to 100 m.

How much does the Seiko Astron GPS Solar Dual-Time Chronograph (5X83) cost, and is it available?

It is current-production and lists from $2,500.

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