Seiko Astron GPS Solar (SSH157)
The Seiko Astron GPS Solar (SSH157) is a discontinued watch with a titanium (super-hard coated) case, finished with super-hard coating; ceramic bezel. At 117 g it sits among the heavier watches in the guide, and is priced above the $1,425 median across the guide. The maker states no nickel-bearing steel at any skin-contact point, across the case, caseback and bracelet. No longer offered new; listed here as an archive reference for the used market.
- Reference
- SSH157J1
- Type
- Other
- Case diameter
- 43.3 mm
- Thickness
- 13.4 mm
- Lug-to-lug
- 49.5 mm
- Origin
- Japan
- Movement
- GPS Solar
- Caliber
- Seiko 5X83
- Power reserve
- 6 months (full charge)
- Complications
- Chronograph, Worldtimer, GMT, Perpetual calendar, Power reserve, Date
- Colour
- Grey
- Surface treatment
- Super-hard coating; ceramic bezel
- Finish technology
- Surface hardening
- Caseback
- Titanium
- Nickel-free
- Maker states none
- Bracelet / strap
- Titanium bracelet
- Matching bracelet
- Standard
- Crystal
- Sapphire (dual-curved, super-clear coating)
- Display back
- No
- Dial
- Blue (Infinite Starry Sky)
- Dial colours
- Blue
- Lume
- LumiBrite
- Availability
- No longer offered
- Status
- No longer offered (2024 limited edition of 1,500, sold out and removed from the Seiko lineup)
- Not published
- Hardness, Construction
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Is the Seiko Astron GPS Solar (SSH157) nickel-free?
On the maker's published specification, no nickel-bearing steel touches the skin: a titanium (super-hard coated) case with a titanium caseback, plus a non-steel crown and bracelet and clasp. That is what the guide records rather than a test of the watch, so confirm the contact points with the maker before buying if you react to nickel.
What is the case material of the Seiko Astron GPS Solar (SSH157)?
The Seiko Astron GPS Solar (SSH157) has a titanium (super-hard coated) case with a titanium caseback. This is confirmed against the maker spec.
What size is the Seiko Astron GPS Solar (SSH157)?
It is 43.3 mm in diameter, 13.4 mm thick, 49.5 mm lug to lug, and water resistant to 100 m.
How much does the Seiko Astron GPS Solar (SSH157) weigh?
About 117 g.
How much does the Seiko Astron GPS Solar (SSH157) cost, and is it available?
It is no longer offered new; the guide keeps it as an archive reference for the used market, and it listed from $2,500 when current.
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