The Seiko Astron GPS Solar Dual-Time Watch SSH021J1, priced at MRP ₹180,000 (inclusive of all taxes), stands as a defining example of how advanced technology and refined craftsmanship can coexist in a single timepiece. Designed for individuals who operate across borders and time zones, this watch represents the evolution of the Astron legacy recognized globally as the world’s first GPS Solar watch.
Belonging to the elite 5X Series, the SSH021J1 introduces a slimmer profile, faster satellite synchronization, and a feature set engineered for absolute real-world accuracy.
Table of contents
- Refined Design with Purposeful Proportions
- Dual-Curved Sapphire Crystal with Super-Clear Coating
- Calibre 5X53 GPS Solar Movement
- Dual-Time Display for a Global Lifestyle
- Solar Power with Intelligent Power-Save Function
- World-Time Function Optimized for Speed
- Durability with 10-Bar Water Resistance
- Metal Bracelet and Secure Clasp System
- Enhanced Visibility with LumiBrite
- 5X Series Engineering Advantage
- Who This Watch Is Designed For
- Exceptional Value at ₹180,000
- Final Impression
Refined Design with Purposeful Proportions
The watch features a 42.7 mm round stainless-steel case treated with a super-hard coating, offering superior resistance to scratches and daily wear. With a 13.3 mm thickness and 50 mm length, the proportions deliver a strong wrist presence without compromising comfort.
The black dial reinforces a bold yet understated aesthetic, emphasizing clarity and balance. Every element is carefully positioned to ensure optimal legibility, making this timepiece as functional as it is visually commanding.

Dual-Curved Sapphire Crystal with Super-Clear Coating
Protecting the dial is dual-curved sapphire glass enhanced with super-clear coating, significantly reducing glare and reflections. This ensures crystal-clear visibility from virtually any angle, whether under bright sunlight or indoor lighting. Sapphire crystal also delivers exceptional durability, preserving the watch’s premium appearance over years of use.
Calibre 5X53 GPS Solar Movement
Powering the SSH021J1 is the advanced Calibre 5X53 GPS Solar dual-time movement, a technological achievement designed for unmatched precision.
- Accuracy: ±15 seconds per month (without GPS signal, between 5°C and 35°C)
- GPS-Controlled Time Adjustment: Automatic synchronization with GPS satellites
- Global Coverage: Supports 40 international time zones
- Perpetual Calendar: Accurate until the year 2100

The movement ensures the correct local time anywhere on Earth, eliminating manual adjustments and minimizing timekeeping errors.
Dual-Time Display for a Global Lifestyle
The dual-time function with AM/PM indication allows simultaneous tracking of two time zones, making it ideal for international travel, global business operations, and frequent flyers. Time zone transitions are swift and seamless, ensuring uninterrupted accuracy during cross-border movement.
The inclusion of daylight saving adjustment further enhances convenience by automatically adapting to regional time changes.
Solar Power with Intelligent Power-Save Function
The SSH021J1 is powered entirely by light, utilizing Astron’s advanced GPS Solar technology. Exposure to natural or artificial light keeps the watch continuously charged, eliminating the need for battery replacements.
- Operating Duration: Approximately 6 months on a full charge
- Power-Save Mode: Up to 2 years of reserve when inactive
When the watch is kept in darkness, it automatically enters power-save mode while retaining internal time data. Once light is detected, normal operation resumes instantly.

World-Time Function Optimized for Speed
The integrated world-time function allows instant access to multiple time zones with high-speed adjustment. GPS signal reception result indication provides confirmation of successful synchronization, reinforcing confidence in time accuracy at all times.
This level of responsiveness distinguishes the 5X Series from previous generations.
Durability with 10-Bar Water Resistance
Built for everyday versatility, the watch offers 10-bar (100 meters) water resistance, suitable for daily activities, rain exposure, and light water sports. A screw case back adds structural strength while maintaining a clean, professional finish.
Metal Bracelet and Secure Clasp System
The silver metal strap complements the black dial with a refined contrast, enhancing the watch’s premium appeal. The bracelet is paired with a three-fold clasp featuring push-button release, ensuring secure fastening and ease of use throughout the day.
Enhanced Visibility with LumiBrite
The application of LumiBrite on hands and indices guarantees excellent visibility in low-light conditions. Whether navigating during night travel or checking the time in dim environments, readability remains uncompromised.
5X Series Engineering Advantage
As part of the Astron 5X Series, the SSH021J1 benefits from a slimmer GPS module, faster signal reception, and improved movement efficiency. These enhancements result in superior wearability, quicker synchronization, and enhanced user experience.

Who This Watch Is Designed For
The Astron GPS Solar Dual-Time SSH021J1 is ideally suited for:
- International travelers and professionals
- Watch collectors seeking advanced horology
- Individuals who value precision without maintenance
- Users who prefer technology-driven luxury
Exceptional Value at ₹180,000
At its price point, the SSH021J1 delivers a rare combination of satellite-controlled accuracy, solar sustainability, perpetual calendar intelligence, and premium finishing. Few timepieces offer this level of technological sophistication with such refined execution.
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Final Impression
The Astron GPS Solar Dual-Time Watch SSH021J1 stands as a definitive reference in contemporary luxury watchmaking. Precision, innovation, and design discipline converge to create a timepiece built for a connected, global world. This model is not merely an accessory it is a precision instrument engineered for those who demand certainty in every second.
