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 other watch with a Titanium (Super Titanium) case, finished with super-hard coating. It is water resistant to 200 m. Inside is the Seiko 5X53 gps solar movement, with 6 months power reserve. Complications: GMT, Worldtimer, Perpetual calendar. Priced from $2,300 (approx). Brand origin: Japan.

Titanium other watchesUnder $3,000GMT
Reference–
TypeOther
Price$2,300 · approx
Case diameter–
Thickness–
Lug-to-lug–
Water resistance200 m
Weight–
OriginJapan
MovementGPS Solar
CaliberSeiko 5X53
Power reserve6 months
ComplicationsGMT, Worldtimer, Perpetual calendar
TitaniumTitanium (Super Titanium)
Surface treatmentSuper-hard coating
Nickel-freeYes
Bracelet / strapTitanium
CrystalSapphire
Display backNo
DialBlack
LumeLumiBrite
AvailabilityOffered
StatusCurrent
High confidence Verified 2026-06-22 Source: Seiko Maker / listing ↗
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