The Titanium Field Guide

Seiko Astron GPS Solar Dual-Time Sport SSH117

The Seiko Astron GPS Solar Dual-Time Sport SSH117 is a current-production watch with a Titanium (Super Titanium) case, finished with super-hard coating. It is priced above the $1,899 median across the guide. Nothing touching the skin is nickel-bearing steel, verified across the case, caseback and bracelet.

Titanium other watchesUnder $3,000SolarWorldtimerPerpetual calendarGMT
Price
$2,300
Titanium
Titanium (Super Titanium)
Water resistance
200 m
Nickel-free
Yes
Type
Other
Case diameter
43.1 mm
Origin
Japan
Movement
GPS Solar
Caliber
Seiko 5X53
Power reserve
6 months
Complications
GMT, Worldtimer, Perpetual calendar
Case shape
Round
Case colour
Natural / grey
Finish technology
Surface hardening
Surface treatment
Super-hard coating
Caseback
Titanium
Bracelet / strap
Titanium
Crystal
Sapphire
Display back
No
Dial
Black
Dial colours
Black
Lume
LumiBrite
Availability
Offered
Status
Current
Not published
Reference, Thickness, Lug-to-lug, Weight, Titanium bracelet Help verify
High confidence Verified Jul 2026 Source: Seiko Maker / listing ↗
Facts are free to cite with a link.
Reader reviews & photosContribute photo or review
No reviews yet. Be the first to write one.
See it in the interactive guideGet new-watch alertsContribute a photo or review

Browse all titanium watch comparisons →

Similar titanium watches

Citizen Attesa Satellite Wave GPS F950 (Super Titanium)CitizenAttesa Satellite Wave GPS F950 (Super Titanium)$2,21044.6 mm111 gOthersame category · same style · similar price · similar sizeCitizen Attesa Black Titanium Eco-Drive GPS (Super Titanium, DLC)CitizenAttesa Black Titanium Eco-Drive GPS (Super Titanium, DLC)$2,21044.6 mm111 gOthersame category · same style · similar price · similar sizeCitizen Attesa Blue Universe Satellite Wave GPS F950 (CC4106-74E)CitizenAttesa Blue Universe Satellite Wave GPS F950 (CC4106-74E)$2,43744.0 mm13.7 mm thickOthersame category · same style · similar price · similar sizeCitizen Attesa Satellite Wave GPS F950 2025 Limited (Super Titanium)CitizenAttesa Satellite Wave GPS F950 2025 Limited (Super Titanium)$2,58044.0 mm116 gOthersame category · same style · similar price · similar sizeCasio Oceanus Manta OCW-S7000-1ACasioOceanus Manta OCW-S7000-1A$1,30042.8 mm9.5 mm thick83 gOthersame category · same style · similar price · similar size
CitizenAttesa Satellite Wave GPS F950 Cosmic Blue (Super Titanium, Ti 50th)$2,90044.0 mm112 gOthersame category · same style · similar price · similar size
Porsche Design1919 Globetimer (Titanium)$2,35042.0 mm14.9 mm thickOthersame category · same style · similar price · similar sizeBotta MONDO GMT (Tri-Titanium)BottaMONDO GMT (Tri-Titanium)$2,52045.0 mm9.5 mm thickOthersame category · same style · similar price · similar size

Alternatives to the Seiko Astron GPS Solar Dual-Time Sport SSH117

March LA.B AM2 Slim GMT TitaneMarch LA.BAM2 Slim GMT Titane$2,51436.0 mm12.5 mm thick82 gOthersame category · same style · shared complications · similar priceWatch Angels CB01 TitanideWatch AngelsCB01 Titanide$2,86040.0 mm61 gOthersame category · same style · shared complications · similar price
CitizenAttesa Tsuki-Yomi A-T (Super Titanium)$87543.0 mm105 gOthersame category · same style · shared complications · similar sizeAccutron Astronaut LTi (26B204A)AccutronAstronaut LTi (26B204A)$3,15041.0 mmOthersame category · same style · shared complications · similar price
KRONOSTIAtlas GMT$20941.0 mm13 mm thickOthersame category · same style · shared complications · similar sizeBreitling Aerospace B70 Orbiter (titanium)BreitlingAerospace B70 Orbiter (titanium)$4,60043.0 mm12.95 mm thick109 gOthersame category · same style · shared complications · similar size

More titanium watches from Seiko

Seiko Prospex Shogun Titanium (SPB191)SeikoProspex Shogun Titanium (SPB191)$1,20043.5 mm13.3 mm thick99 gDiver
SeikoProspex "Cave Diver" Shogun Titanium (SPB349)$1,50043.5 mmDiverSeiko Prospex SeikoProspex "Cave Diver" Shogun Titanium (SPB351)$1,50043.5 mmDiver
SeikoProspex "Cave Diver" Shogun Titanium (SPB357)$1,50043.0 mmDiverSeiko Prospex Marinemaster Professional 600m Titanium (SBDX067)SeikoProspex Marinemaster Professional 600m Titanium (SBDX067)$4,60045.4 mmDiverSeiko Prospex LX Line Spring Drive GMT Titanium (SNR035)SeikoProspex LX Line Spring Drive GMT Titanium (SNR035)$5,25044.8 mmOther

Frequently asked questions

Is the Seiko Astron GPS Solar Dual-Time Sport SSH117 nickel-free?

Yes. Nothing nickel-bearing touches the skin: a Titanium (Super Titanium) case with a titanium caseback, plus a non-steel crown and bracelet and clasp. The Titanium Field Guide marks it nickel-free for whole-watch skin contact. If your allergy is severe, confirm the contact points with the maker.

What grade of titanium is the Seiko Astron GPS Solar Dual-Time Sport SSH117?

The Seiko Astron GPS Solar Dual-Time Sport SSH117 has a Titanium (Super Titanium) case with a titanium caseback. This is confirmed against the maker spec.

What size is the Seiko Astron GPS Solar Dual-Time Sport SSH117?

It is 43.1 mm in diameter, and water resistant to 200 m.

How much does the Seiko Astron GPS Solar Dual-Time Sport SSH117 cost, and is it available?

It is current-production and lists from $2,300.

All titanium Seiko watches · Titanium other watches · All 1,175 watches

Learn: Titanium grades · Surface treatments · Why titanium scratches · How to read a spec

How we verify & grade · Image & Trademark Policy · Terms & Conditions