SEIKO ASTRON HAB004J1 145TH ANNIVERSARY LIMITED EDITION MEN WATCH

Seiko Astron HAB004J1 — 145th Anniversary GPS Solar Limited Edition

The Seiko Astron HAB004J1 is Seiko's 145th Anniversary limited edition in the Astron line — the branch of Seiko's collection reserved for its most advanced timekeeping technology, and the home of the world's first GPS Solar watch. Limited to 2,000 pieces worldwide, the HAB004J1 commemorates Seiko's founding year of 1881 with the new 5X63 GPS Solar Dual-Time Chronograph calibre, a super-hard coated titanium case, and a dial design built around "Seiko Blue" — the signature colour that has defined Seiko's brand identity since the 1960s. The light silver dial with blue sub-dials, blue seconds track, and blue accent details creates the most precisely resolved expression of the Seiko Blue identity in any current Astron model.

The 5X63 calibre is the most capable in-house GPS Solar movement Seiko has produced for the Astron line to date: it receives GPS signals for automatic time zone adjustment to any of 38 world cities, delivers 1/20-second chronograph precision, perpetual calendar to 28 February 2100, and a dual-time system with the world time function displayed at 6 o'clock. Power reserve is approximately 6 months on a full charge, with a 2-year power save mode for extended periods without light exposure. The 43.4mm super-hard coated titanium case is lightweight despite its presence on the wrist — titanium at this diameter wears substantially differently from stainless steel. The quick-change system allows instant swap between the titanium bracelet and the included blue-and-white silicone strap without tools.

Key Features

• Seiko 5X63 GPS Solar calibre — the latest and most capable Astron GPS Solar movement
• GPS signal reception for automatic time zone adjustment across 38 world cities — always accurate, anywhere
• Dual-time function — main dial and sub-dial time zone display with time transfer capability
• 1/20-second chronograph — precision timing with symmetrical sub-dial layout
• Perpetual calendar to 28 February 2100 — zero manual date adjustment required
• Day display — weekday reference built into the layout
• Power reserve indicator — monitor solar charge level at a glance
• Approx. 6-month power reserve when fully charged — extended reliability between light exposures
• Power save mode approx. 2 years — long-duration storage without damage
• White/silver dial with Seiko Blue sub-dials and seconds track — 145th Anniversary commemorative design language
• LumiBrite on hands and indexes — superior legibility in low light
• Sapphire crystal with super-clear coating — premium clarity and scratch resistance
• 43.4mm titanium case with super-hard coating — lightweight, durable, and resistant to daily wear
• Quick-change system — tool-free instant swap between titanium bracelet and silicone strap
• Blue-and-white silicone strap included — sport-ready alternative to the titanium bracelet
• Magnetic resistance 4,800 A/m — protection in high-magnetic environments
• 10 bar / 100M water resistance — active use ready
• "LIMITED EDITION" inscription on screw caseback — collectible provenance
• Limited to 2,000 pieces worldwide — confirmed global scarcity

Why You'll Love It

The HAB004J1 is the Seiko Astron for the collector who wants the 145th Anniversary commemoration in the most technically advanced and design-resolved form available. The 5X63 calibre is the current pinnacle of Seiko's GPS Solar development — automatic time zone adjustment anywhere in the world, perpetual calendar, 1/20-second chronograph, and a dual-time layout that makes this a genuinely functional travel watch as well as a collector's limited edition. The titanium case means the 43.4mm diameter wears far lighter than equivalent stainless steel watches of this size. The Seiko Blue dial design is the most elegant expression of the anniversary theme in the current Astron lineup. And at 2,000 pieces worldwide, this is a limited edition with meaningful scarcity — the combination of advanced GPS Solar specification and the 145th Anniversary story makes it a watch that is unlikely to be reproduced.

About Seiko Astron

Seiko Astron is Seiko's flagship GPS Solar line — the watches reserved for the brand's most advanced timekeeping technology. The "Astron" name first appeared in 1969 on the world's first quartz watch, a milestone that transformed the watch industry globally. When Seiko relaunched the Astron name in 2012, it did so with the world's first GPS Solar watch — a watch that could automatically synchronise to any time zone on earth using GPS satellite signals and charge from light. The HAB004J1 is the Astron at its most commemorative: the technology Seiko is most proud of, in a limited edition that marks 145 years of innovation since Kintaro Hattori founded his clock and watch shop in Ginza.

The Seiko Story

The story begins in 1881, when Kintaro Hattori founded a clock and watch shop in Ginza, Tokyo — the business that would become the Seiko of today. One hundred and forty-five years later, Seiko remains one of the world's few truly vertically integrated watch manufacturers — designing, developing, and producing its own movements, cases, and crystals in Japan. The HAB004J1 is the direct expression of that 145-year journey: the most capable GPS Solar movement in a titanium case that carries the founding year's story forward in the most technologically ambitious Astron limited edition produced to date.

Backed by Seiko's official warranty. Authentic Seiko Astron 145th Anniversary Limited Edition, sold by authorised retailer City Chain Singapore.

Explore the full Seiko Astron Collection or browse all Seiko watches at City Chain Singapore.