The Titanium Field Guide

Seiko Astron GPS Solar Dual-Time Chronograph SSH175

The Seiko Astron GPS Solar Dual-Time Chronograph SSH175 is a current-production chronograph watch with a Titanium (Super Titanium) case, finished with super-hard coating. It measures 44.1 mm across, 14.4 mm thick, and is water resistant to 100 m. Inside is the Seiko 5X83 gps solar movement, with 6 months power reserve. Complications: Chronograph, GMT, Worldtimer, Perpetual calendar. Priced from $3,100 (approx). Brand origin: Japan.

Titanium chronograph watchesGMT
Reference–
TypeChronograph
Price$3,100 · approx
Case diameter44.1 mm
Thickness14.4 mm
Lug-to-lug–
Water resistance100 m
Weight–
OriginJapan
MovementGPS Solar
CaliberSeiko 5X83
Power reserve6 months
ComplicationsChronograph, GMT, 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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