Seiko Astron HAB005 Miami

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Limited to 1,200 pieces worldwide · Caliber 5X63 GPS Solar · 43.4mm super-hard coated titanium · Extra black silicone strap included · $2,900 at Lexor Miami, an authorized Seiko Luxe dealer with a 3-year manufacturer's warranty and free shipping in the contiguous US.

The Seiko Astron HAB005 "Crystal Green," one of only 1,200 pieces made worldwide, available now at Lexor Miami.

Shop the Seiko Astron HAB005 – $2,900

Seiko Astron HAB005 at a Glance

The Seiko Astron HAB005 (full reference HAB005J1) is a 2026 limited-edition GPS Solar dual-time chronograph with a "Crystal Green" dial inspired by green quartz, a 43.4mm super-hard coated titanium case, Seiko's Caliber 5X63 movement, and a production run of 1,200 pieces worldwide. It sets its own time and time zone via GPS satellites, runs on light, includes an extra black silicone strap, and sells for $2,900 in the United States.

• Reference: HAB005 / HAB005J1 (Made in Japan)
• Edition: Limited to 1,200 pieces; "LIMITED EDITION" and an individual serial number engraved on the caseback
• Movement: Caliber 5X63 GPS Solar, ±15 seconds per month without a GPS signal
• Power: About 6 months on a full charge; about 2 years in power-save mode
• Case: 43.4mm diameter, 12.4mm thick, 50.0mm lug-to-lug, titanium with super-hard coating
• Dial: Crystal Green, faceted pressed pattern, black sub-dials
• Water resistance: 10 bar (100 meters), for everyday use
• In the box: Titanium bracelet, black silicone strap, special nylon presentation box
• Price at Lexor Miami: $2,900, with a 3-year Seiko warranty and free shipping

Introduction: Green Meets GPS

Green has become one of the defining dial colors of modern watchmaking. Over the past several years, collectors have embraced it on everything from Swiss dive watches to Japanese dress pieces, drawn to the way it reads as both bold and natural at the same time. Until 2026, though, the Seiko Astron had largely stayed out of that conversation. Its dials favored the cool, technical palette of black, navy, and graphite that suited a watch built for engineers and frequent flyers.

The HAB005 changes that. Released in July 2026 alongside its Crystal Pink sibling, the HAB006, it brings a fresh, luminous green to the top of the Astron range. The dial is pressed with a newly developed pattern based on the facets of a quartz crystal, then finished in a shade Seiko describes as inspired by green quartz. Set against three black sub-dials and black accents, the color feels confident and sporty rather than decorative.

Behind that dial sits Seiko's Caliber 5X63, a GPS Solar movement that finds its own time zone anywhere on Earth, tracks a second time zone, times events to 1/20 of a second, and keeps a perpetual calendar that needs no correction until February 28, 2100. Like every Astron, it runs on light.

With only 1,200 pieces made for the entire world, the HAB005 is also one of the rarest Astrons Seiko has produced. This guide is written for American buyers deciding whether it belongs on their wrist. We cover its history, specifications, design, technology, how it compares with the rest of the 2026 family, and why buying from an authorized dealer protects your investment.

Seiko and the Astron: A History of Firsts

Ginza, 1881

Seiko's story starts in 1881, when Kintaro Hattori opened a watch and clock shop in Tokyo's Ginza district. The company grew into one of the world's few fully integrated watchmakers, producing nearly every component in-house, from springs and dials to quartz crystals, solar cells, and the GPS receivers in its Astron calibers. In 2026 Seiko marks its 145th anniversary, and the new Astron releases are a centerpiece of that celebration.

1969: The Quartz Crystal Changes Everything

On Christmas Day 1969, Seiko launched the original Astron, the first quartz wristwatch ever sold. At its heart was a tiny vibrating quartz crystal that kept time far more precisely than any mechanical balance wheel. That invention sparked the Quartz Revolution and transformed watchmaking worldwide. The HAB005's dial, modeled on the facets of a quartz crystal, is a direct tribute to that breakthrough.

2012: The First GPS Solar Watch

Seiko revived the Astron name in 2012 for the world's first GPS Solar watch, able to receive satellite signals, identify its time zone, and set itself while running purely on light. Making GPS work within a solar watch's tiny energy budget required Seiko to develop its own ultra-low-power receiver. Each generation since has become smaller and faster.

2026: A New Caliber, a New Case, and New Colors

In May 2026 Seiko introduced the Caliber 5X63 with the HAB001, HAB002, HAB003, and the 145th Anniversary HAB004. The new case is about a millimeter slimmer than the previous generation, the dial layout is cleaner, and a quick-change system lets you swap bracelet and strap without tools. In July Seiko added two limited editions in color: the HAB005 Crystal Green and the HAB006 Crystal Pink, 1,200 pieces each. Only the HAB004, HAB005, and HAB006 include a second strap in the box.

At 12.4mm thick, the 2026 Astron case is about a millimeter slimmer than the previous generation.

Key Features of the Seiko Astron HAB005

GPS Time Zone Adjustment

Outdoors, press the reception button and the HAB005 acquires GPS satellites, calculates your location, and sets local time. The world-time database covers 38 cities, and reception works anywhere with an open sky, including at sea.

Automatic Time Sync

Once your zone is set, the watch automatically re-syncs to GPS time when it detects bright outdoor light, holding ±15 seconds per month in between.

Dual Time with Time Transfer

A sub-dial shows home time while the main hands show local time. The time transfer function swaps them with one press when you arrive somewhere new.

1/20-Second Chronograph

The chronograph records elapsed time up to 24 hours in 1/20-second increments.

Perpetual Calendar to 2100

Day and date displays account for every month length and leap year until February 28, 2100.

DST and In-Flight Mode

Daylight saving time is a single setting, and in-flight mode disables GPS reception during air travel.

Power and Reception Indicators

The watch displays its charge level, the number of satellites acquired, and whether its last reception succeeded.

Quick-Change Bracelet and Strap

A push-button release lets you swap the titanium bracelet for the included black silicone strap in seconds, then lock it in place with a simple press. No tools, no spring-bar scratches.

Benefits: What the HAB005 Brings to Your Life

It handles travel for you. After a flight from Miami to Rome, a single press outdoors switches the watch to local time while home time waits on the sub-dial.

It never needs setting. GPS sync, a perpetual calendar, and DST control eliminate nearly every reason to touch the crown.

It runs on light. Daylight and indoor lighting keep it charged. A full charge lasts around six months, and power-save mode extends that to about two years. No routine battery changes.

It is more accurate than any mechanical watch. ±15 seconds a month on its own, corrected to GPS time whenever it sees the sky.

It is light and comfortable. Titanium weighs far less than steel, so this 43.4mm chronograph stays comfortable all day in any climate.

It is two watches in one. Titanium bracelet for the office or dinner; black silicone strap for the beach, the boat, or the golf course.

It is genuinely rare. With 1,200 pieces worldwide, each serial-numbered, the HAB005 is far scarcer than most luxury sports watches in its price range.

Check Availability – Only 1,200 Made

Seiko Astron HAB005 Specifications

All specifications below are verified against Seiko's official US product page for reference HAB005J1.

Complete Function List (Caliber 5X63)

• GPS signal reception: time zone adjustment, automatic time adjustment, manual time adjustment
• World time function (38 cities)
• Dual-time function with time transfer between main dial and sub-dial
• Chronograph up to 24 hours in 1/20-second increments
• Perpetual calendar accurate to February 28, 2100
• Day and date display
• Power reserve indicator
• Satellite acquisition status and reception result displays
• DST (daylight saving time) function
• In-flight mode
• Power save and overcharge prevention
• Automatic hand position alignment

Materials: Engineered for Everyday Life

Super-Hard Coated Titanium

Titanium is about 40% lighter than stainless steel, resists corrosion from salt air and perspiration, and is gentle on sensitive skin. Its weakness has always been softness, so Seiko protects the HAB005's case and bracelet with a proprietary super-hard coating that dramatically improves scratch resistance. The brushed and polished surfaces stay crisp, and the cool gray of titanium frames the green dial beautifully.

Sapphire Crystal with Super-Clear Coating

The dial sits beneath a sapphire crystal, nearly as hard as diamond. Seiko's Super-Clear anti-reflective coating removes glare, which lets the faceted green surface show its full depth. Without it, much of the dial's play of light would be lost to reflections.

LumiBrite

Seiko's non-radioactive LumiBrite compound coats the hands and indexes, charging quickly in light and glowing clearly in the dark.

Black Silicone Strap

The included strap echoes the black sub-dials and accents. Silicone is comfortable in heat, resists pool chlorine and salt water, and gives the watch a sportier look for weekends and travel.

Every HAB005 carries a screw-down caseback engraved "LIMITED EDITION" with its own serial number.

Design: The Color of Quartz, Reimagined

The Crystal Green Dial

Seiko built the HAB005's dial around a simple idea: show the inside of the material that made the Astron possible. A newly developed pressed pattern recreates the multiple facets of a quartz crystal, and a Crystal Green finish inspired by green quartz gives every facet its own reflection. In direct sunlight, the green turns bright and almost minty; in shade or indoor light, it deepens into a cooler, more muted tone. The dial seems to move even when the watch is still.

Black Sub-Dials and Accents

Three black sub-dials and black accents anchor the green, giving the dial contrast, legibility, and a distinctly sporty character. The combination keeps the HAB005 from reading as a fashion watch; it looks like a serious chronograph that happens to wear a striking color.

Octagonal Bezel and Faceted Case

The case follows the 2026 Astron design: a multifaceted silhouette, an octagonal titanium bezel, and a bracelet that flows directly from the case. Brushed and polished surfaces alternate across its angles, echoing the faceted pattern on the dial so the whole watch feels like one carefully cut object.

On the Wrist

At 43.4mm, the HAB005 has real presence, but the 50.0mm lug-to-lug length and 12.4mm thickness keep it wearable on most wrists from about 6.5 inches upward. The bracelet curves down sharply from the case, hugging the wrist. Switch to the silicone strap and it wears even lighter.

Why Green Works

Green is one of the most adaptable dial colors. It pairs naturally with navy, white, khaki, earth tones, and denim, and it looks right in both formal and casual settings. For many collectors, a green dial is the color they wear most often once they own one, precisely because it feels distinctive without being difficult to style.

Technology: How the Caliber 5X63 Works

Solar Charging

A solar cell beneath the dial converts light into electricity, stored in a rechargeable cell. Seiko engineered the Crystal Green dial to let enough light through to charge efficiently while preserving its rich, reflective finish. An overcharge prevention function protects the cell in strong sun.

GPS Reception

When you initiate a time zone adjustment, the watch acquires signals from four or more GPS satellites, calculates your position, and sets local time. It also performs time-only syncs automatically when it detects bright outdoor light.

GPS vs. Radio-Controlled Watches

Radio-controlled watches depend on ground transmitters with limited coverage; in the US, a single station near Fort Collins, Colorado. GPS covers the entire planet, so the HAB005 can find accurate time over open ocean or in regions no radio signal reaches.

Magnetic Resistance

Rated to 4,800 A/m, the 5X63 resists the magnetic fields from phones, laptops, tablets, and speakers.

Living with the HAB005: Care and Everyday Use

Keep It in the Light

Wearing the watch during the day is usually enough to keep it charged. If it sits unworn for weeks, it enters power-save mode; place it near a window for a few hours to wake it up. The power reserve indicator shows exactly where you stand.

Best Practices for GPS Reception

Reception works best outdoors with a clear view of the sky, away from tall buildings and dense trees, with the dial facing up. Remember to activate in-flight mode when you board.

Switching Bracelet and Strap

Press the release button in the end link, slide the bracelet out, and click the strap into place until it locks. Store the bracelet in the presentation box so both stay in perfect condition. Keeping the original strap, bracelet, box, and papers together also preserves the value of a limited edition.

Cleaning

Rinse with fresh water after the ocean or pool, then dry with a soft cloth. Avoid harsh chemicals and abrasives that could dull the coated titanium.

Own One of 1,200 – Shop Now

Who Should Buy the Seiko Astron HAB005?

Collectors of Limited Editions

With 1,200 pieces, serial-numbered casebacks, and a dial shared with only one sibling, the HAB005 is an easy fit for collections built around rare references. It also marks the first year of the 5X63 caliber, a milestone in Astron history.

Fans of Green Dials

If you already love green dials, the HAB005 offers something no mechanical green-dial watch can: GPS Solar precision in a faceted, crystal-inspired finish.

International Travelers

Automatic time zone setting and a home-time sub-dial make the HAB005 a genuine travel instrument for anyone who flies often from MIA, JFK, ATL, or LAX.

Golfers and Outdoor Enthusiasts

Titanium, 10 bar water resistance, and the included silicone strap make the HAB005 comfortable on the course, the boat, or the trail, while the green dial feels right at home outdoors.

Buyers Who Want Color Without Compromise

The HAB005 delivers personality on a serious, technically advanced titanium chronograph, not on a fashion piece.

Gift Buyers

A serial-numbered limited edition that never needs setting is a memorable gift for milestone birthdays, promotions, retirements, and anniversaries.

Why Buy the Seiko Astron HAB005 at Lexor Miami?

Authorized Seiko Luxe Dealer

Lexor Miami is an authorized Seiko Luxe retailer listed on Seiko's official US store locator. Your HAB005 arrives brand new through official channels with the bracelet, the black silicone strap, the special nylon presentation box, and full documentation.

3-Year Manufacturer's Warranty

Gray-market sellers often cannot provide a valid Seiko warranty. An authorized purchase guarantees the full 3-year coverage on a complex GPS Solar movement.

Authenticity That Protects Value

Every watch we sell is 100% authentic and brand new. For a limited edition, complete box, papers, and verifiable authorized-dealer provenance also matter when you insure the watch or eventually pass it on.

Free Shipping and 30-Day Returns

The HAB005 ships free within the 48 contiguous United States, with expedited options at checkout. Unopened, unused items can be returned within 30 days of delivery using a prepaid label.

Visit Our Miami Showroom

Lexor Miami is a family-run, women-owned business with more than 20 years in luxury retail and over 3,100 five-star Google reviews. See the HAB005 at 2371 NW 20th St, Miami, FL 33142, Monday through Saturday, 10 AM to 6 PM, with free parking and on-site security. Our team can size the bracelet, demonstrate the quick-change system, and show you the HAB005 alongside the rest of our Seiko Astron collection. Learn more about Lexor Miami, read our overview of Seiko King and Astron watches in Miami, or explore luxury shopping in Miami.

Expert Help

Reach our specialists by WhatsApp or phone at +1 (786) 333-1331, by email at info@lexormiami.com, or through our contact page. Shipping and payment details are in our store FAQs.

Buy from an Authorized Dealer

Seiko Astron HAB005 vs. Similar Models

The 2026 Astron 5X63 Family Compared

Every model shares the Caliber 5X63, the 43.4mm by 12.4mm titanium case, sapphire crystal, and quick-change system. What changes is the dial, what comes in the box, and rarity.

HAB005 vs. HAB006: Twins in every specification and edition size, separated only by color. The Crystal Pink HAB006 is warmer and more of a statement; the Crystal Green HAB005 is fresher, more versatile, and easier to pair with everyday clothing. Many collectors view them as a set, and owning both is a rare way to own 2 of only 2,400 crystal-dial Astrons.

HAB005 vs. HAB004: The 145th Anniversary HAB004 shares the price and the extra-strap package, but its edition is larger at 2,000 pieces and its palette more traditional. Read our Seiko Astron HAB004 review for the full story. The HAB005 is scarcer and more distinctive.

HAB005 vs. HAB001 and HAB002: The blue HAB001 and black HAB002 cost $200 less and use the same movement and case, but they are regular-production models without the crystal dial, the numbered caseback, the second strap, or the special box. If rarity and versatility matter, the HAB005 delivers more for the difference.

HAB005 vs. Other Seiko GPS Solar Watches

Lexor Miami also offers the Seiko 100th Anniversary Speedtimer Limited Edition SSH169 ($2,400), a GPS Solar chronograph with racing-inspired design, and the dressier Astron GPS Solar SSJ014 ($2,300) and Astron SSJ023 ($2,400). The HAB005 stands apart with its newer 5X63 caliber, slimmer titanium case, quick-change system, and limited-edition status.

HAB005 vs. Rival Brands

Citizen's Satellite Wave GPS line is the most direct competitor in solar GPS timekeeping, and Casio's premium models sync by radio and Bluetooth. None currently pairs a limited-edition faceted green dial with a super-hard coated titanium integrated-bracelet chronograph at this price. Compared with green-dial Swiss mechanical sports watches that often cost several times more, the HAB005 is lighter, far more accurate, and almost maintenance-free, though it naturally offers a different appeal than traditional mechanical craftsmanship. For mechanical heritage, explore our King Seiko collection.

The HAB005 includes a black silicone strap and a special presentation case exclusive to this limited edition.

The Luxury Lifestyle of the Seiko Astron HAB005

The HAB005 is made for a life that moves between worlds. Picture a Saturday morning tee time in Doral, lunch on the water in Key Biscayne, and an evening flight to Costa Rica. The green dial looks perfectly at home on the course, on the silicone strap, under the sun. By dinner, the titanium bracelet is back on, and the watch looks just as right with a linen shirt and loafers. When you land, one press outdoors and you are on local time, with Miami waiting on the sub-dial.

Green carries associations with nature, growth, and calm confidence, which is part of why it has become a favorite among collectors who want something distinctive without being loud. On the HAB005, that green is cut through by black sub-dials and framed by gray titanium, a combination that works with navy blazers, white tees, khakis, and earth tones alike. Add designer sunglasses from Lexor Miami's eyewear collections and you have a look that moves effortlessly from Miami Beach to Monaco.

And because only 1,200 exist, the HAB005 is also a conversation piece in the best sense. Few people will ever see one in person, and those who know watches will recognize it immediately.

Make the HAB005 Yours

Frequently Asked Questions About the Seiko Astron HAB005

How much does the Seiko Astron HAB005 cost?

The Seiko Astron HAB005 costs $2,900 in the United States. At Lexor Miami, that includes free shipping within the contiguous US and a 3-year Seiko manufacturer's warranty.

How many Seiko Astron HAB005 watches were made?

Seiko limited the HAB005 to 1,200 pieces worldwide, each with "LIMITED EDITION" and an individual serial number engraved on the caseback.

What color is the HAB005 dial?

Seiko calls it Crystal Green, a fresh, luminous shade inspired by green quartz, pressed with a faceted crystal pattern and paired with black sub-dials.

What is the difference between the HAB005 and the HAB006?

Only the dial color. The HAB005 is Crystal Green and the HAB006 is Crystal Pink. Both are limited to 1,200 pieces, cost $2,900, and include the same movement, case, bracelet, extra strap, and box.

What movement does the HAB005 use?

Seiko's Caliber 5X63 GPS Solar, accurate to ±15 seconds per month without GPS reception and self-correcting when it receives a signal.

What size is the Seiko Astron HAB005?

The case measures 43.4mm in diameter, 12.4mm thick, and 50.0mm lug-to-lug. It wears comfortably on most wrists from about 6.5 inches up.

Does the HAB005 need batteries?

No routine battery changes are needed. Light charges a rechargeable cell that runs about 6 months on a full charge, or about 2 years in power-save mode.

How does it set a new time zone?

Go outdoors with a clear view of the sky and press the reception button. The watch acquires GPS satellites, determines your position, and sets local time.

Is the HAB005 waterproof?

It is water resistant to 10 bar (100 meters), suitable for swimming and everyday water exposure, but not for scuba diving.

What comes in the box?

The titanium bracelet, a black silicone strap, and a special nylon presentation box exclusive to this limited edition, along with Seiko's warranty documentation.

Is the HAB005 a good collector's watch?

Its small edition size, numbered caseback, first-year 5X63 caliber, and complete limited-edition package make it a strong collector's piece. Keep the box, papers, and both straps to preserve its value. No watch should be bought purely as an investment.

Is Lexor Miami an authorized Seiko dealer?

Yes. Lexor Miami is an authorized Seiko Luxe dealer listed on Seiko's official US store locator, and every HAB005 includes the full 3-year manufacturer's warranty.

Can I see the HAB005 in person?

Yes. Visit our showroom at 2371 NW 20th St, Miami, FL 33142, Monday through Saturday, 10 AM to 6 PM. Because quantities are limited, call or message +1 (786) 333-1331 before visiting.

Do you ship the HAB005 outside the US?

Lexor Miami ships only within the 48 contiguous United States, not to Alaska, Hawaii, Puerto Rico, APO/FPO addresses, or international destinations.

Ready to Own the Seiko Astron HAB005?

Only 1,200 Crystal Green Astrons exist worldwide, and US allocations are limited. Secure yours from an authorized Seiko Luxe dealer with a 3-year warranty, free shipping, and a showroom team ready to help.

Shop the Seiko Astron HAB005 Now – $2,900

Prefer to talk first? Message or call +1 (786) 333-1331 or email info@lexormiami.com.

Conclusion: Is the Seiko Astron HAB005 Worth It?

For collectors and anyone who loves a green dial, yes. The HAB005 combines Seiko's most advanced GPS Solar caliber, a slimmer super-hard coated titanium case, a quick-change bracelet with a bonus strap, and a faceted Crystal Green dial that pays tribute to the quartz crystal behind the 1969 original. It is limited to 1,200 pieces, each serial-numbered.

At $2,900, it costs just $200 more than the regular-production HAB001 and HAB002 while adding rarity, a second strap, a special box, and a far more distinctive dial. If you want an Astron with personality that still works with everything you own, the HAB005 is one of the most compelling Seiko releases of 2026.

Explore the full Seiko Astron collection, our limited edition watches, the wider Seiko Luxe and Seiko watch ranges, or more buying guides on the Lexor Miami blog.

The Crystal Green dial is inspired by green quartz and pressed with a faceted crystal pattern.

View the Seiko Astron HAB005