Representing the pinnacle of Japanese electronic horology and contemporary sports luxury, the Seiko Astron GPS Solar Dual-Time Chronograph 43.3mm SSH155J1 delivers atomic timekeeping precision across global time zones. Sculpted in lightweight, surgical-grade high-intensity titanium fortified with Seiko’s proprietary super-hard coating, this cutting-edge watch showcases a multi-layered "Deep Night" black dial inspired by the silence and infinite depth of outer space. Equipped with a dual-curved sapphire crystal treated with Seiko’s proprietary Super-Clear anti-reflective coating, a multi-faceted ceramic and titanium tachymeter bezel, and an ergonomic integrated titanium bracelet with a tool-free micro-adjusting clasp, it is powered by the flagship in-house Seiko Calibre 5X83 GPS Solar movement. Connecting automatically to the global GPS satellite constellation with atomic clock accuracy, it seamlessly integrates a 1/20-second chronograph, dual-time subdial, instant high-speed time transfer, and 100-metre water resistance for international executives and frequent global travelers.
Key Highlights
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Next-Generation In-House Seiko Calibre 5X83 Engine: Advanced GPS Solar movement capable of connecting to satellite networks twice daily, adjusting automatically to local time zones with atomic precision anywhere on Earth.
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High-Precision 1/20-Second Chronograph: Subdial at 12 o'clock measures elapsed time up to 12 hours with 1/20th of a second precision, designed with rapid-reset mechanical action.
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High-Speed Time Transfer Function: Allows the wearer to instantly swap the primary dial time with the 6 o'clock dual-time display in seconds with a simultaneous two-pusher press.
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Ultra-Light High-Intensity Titanium Architecture: Case and bracelet crafted from hypoallergenic titanium with super-hard coating, delivering exceptional scratch resistance at approximately 40% less weight than stainless steel.
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Multi-Part Ceramic & Titanium Bezel: Two-piece bezel assembly combining high-gloss scratch-proof ceramic with faceted titanium for elevated luxury depth.
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Dual-Curved Sapphire with Super-Clear Coating: Eliminates 99% of surface light reflection, creating the optical impression that the crystal is completely invisible.
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Perpetual Calendar to the Year 2100: Calendar automatically accounts for leap years and odd/even months without requiring manual adjustments.
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Smart Adjuster Clasp Mechanism: Three-fold titanium deployant clasp equipped with a push-button slider mechanism for fine on-the-fly wrist sizing adjustments.
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Robust 100-Metre Water Resistance: Pressure rated for 10 bar (100 m / 330 ft), making it fully protected against swimming, water sports, and extreme weather.
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Official Seiko 3-Year Manufacturer Warranty: Fully covered nationwide and internationally under Seiko’s official brand guarantee.
Design & Craftsmanship
"Deep Night" Cosmic Dial Depth & Ergonomic Geometry
The dial of reference SSH155J1 captures the stark contrast of outer space, pairing a textured matte black dial canvas with floating polished indices and sculpted subdials. A 1/20-second counter sits at 12 o'clock, an independent 12-hour dual-time clock with an AM/PM indicator occupies 6 o'clock, and a multifunctional indicator at 9 o'clock provides instant readouts for GPS signal status, power reserve, leap second reception, and airplane mode.
High-Intensity Titanium & Ceramic Engineering
Measuring 43.30 mm in diameter and 13.40 mm in profile, the case is built with low-slung, faceted contours that wrap smoothly around the wrist. The watch weighs just 117 grams due to its full titanium architecture. The bezel combines an inner titanium ring with an outer mirror-polished black ceramic ring, shielding the watch face against heavy impact and abrasive wear.
Calibre 5X83: Solar Autonomy & Global Connectivity
Operating entirely on light power absorbed through solar cells concealed beneath the dial, Calibre 5X83 eliminates battery replacements permanently. When exposed to bright sunlight, the watch automatically syncs with GPS satellites in as little as 3 seconds. When changing time zones, a single manual push of the button moves the independent motors to reset the hands to local time within seconds.
5 Reasons why you should buy watches from Zimson – Since 1948 , Celebrating 75 years
- Zimson is the authorised retailer for Seiko in India
- Zimson deals and sells only authentic watches and all the watches will be furnished with an invoice , brand warranty and brand packaging .
- Zimson is in the business of watch retailing since 1948
- Zimson has a strong after-sales service back up with state of art watch servicing facilities
- Zimson has gained the trust of over million customers throughout these years from our online www.zimsonwatches.com and offline stores present in Bangalore , Chennai , Kochi , Coimbatore , Salem , Madurai , Trichy and Pondicherry .
5 Frequently asked questions from our shoppers:
Are the watches sold at Zimsonwatches.com authentic ?
Ans: Yes , all the watches sold online at zimsonwatches.com and offline stores are 100% authentic and genuine .
Will the warranty be active if I buy online ?
Ans: Yes , all the watches come with brand warranty which can be from 1 yr to 7 years , depending on the brand which is ordered .
How soon can I get my watch once order placed ?
Ans: Once the order is confirmed , order will be processed within 24 hours and despatched within 48 hours and should reach the respective location in 2-3 working days from the time of despatch .
Which courier partner will be used to send the watch ?
Ans: Bluedart , DTDC Plus , Shiprocket .
Can I place order online and collect offline ?
Ans: Yes! One can place the order online and collect his or her watch offline at the desired store , prior information needs to be given so we can facilitate this .
