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ChronoAstra

A one-of-one titanium watch made from your sky

Your Moment.
Written in the Stars.

Give us a date, time and place that matters to you. We calculate the constellations above it, then print that sky onto a Grade 5 titanium watch made for you alone.

Enter the ChronoAstra Order Atelier

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More than €700K raised on KickstarterOne map made for one watchGrade 5 titanium34 mm or 40 mm · Quartz or automatic
Retail value399

Launch gift · First 100 orders

The Grade 5 titanium bracelet is included.

Built to match the case, finished in Grade 5 titanium and fitted with tool-free micro-adjustment. Your launch watch includes the full bracelet at no additional cost.

Claim the launch offer
Duties paid delivery worldwideApplicable local taxes calculated at secure Shopify checkout · nothing extra due on arrival

A real moment, worn every day

The Sky from the Day You Want to Remember.

It might be the night you met, a wedding, a birth, an achievement or someone you want to keep close. Tell us when and where it happened. We make the watch from the sky that was there.

There is no standard map hiding underneath.
Your dial starts with your coordinates and time.
Your date. Your sky. Your watch.
Black Aventurine starmap dial close-up
Every line begins with a real place and time.

How your starmap is made

From a Date and Place to a Finished Watch.

Here is what happens after you choose the moment.

01

Choose the Moment

Give us the exact date, time and location you want the watch to remember.

02

We Map the Sky

Astronomical data shows us which constellations were above that place at that time.

03

We Prepare Your Dial

Your map is turned into production artwork and a pad-printing plate made for your dial.

04

We Build the Watch

We print the dial, engrave the caseback, assemble your chosen configuration and inspect the finished watch.

Create Your ChronoAstra
Blue Aventurine dial · Super-LumiNova BGW9

Made one dial at a time

Your Sky Is Prepared for One Watch.

Most watch dials are printed in large batches. A ChronoAstra starmap starts with one customer’s date, time and place.

We calculate the constellation layout, prepare the production artwork and transfer it to the dial with precision pad printing. The fine stars and lines stay clear even though the layout is used for one watch.

Each layout is prepared for one customer
and used on one finished dial.
01

Prepared Individually

Your starmap is calculated from your moment and prepared for production on its own.

02

Precision Pad Printing

The constellation lines and stars are transferred to the dial with crisp, controlled detail.

03

Swiss Super-LumiNova BGW9

Several layers give the stars and hands a soft blue glow in the dark.

One map · One cliché · One dial

1-of-1 precision pad printing

Your map requires
its own production tool.

Every starmap becomes a high-resolution production artwork and a dedicated engraved printing cliché made for one watch. It is slower and more complex than a stock print, but it gives the constellation the crisp definition a luxury dial deserves.

01 astronomical file01 dedicated cliché01 finished dial
Explore the complete process

Try every combination

Choose Your Dial, Case and Strap.

Compare the approved dial, case and strap combinations here. Your exact movement, size, starmap and engraving are chosen in the secure order atelier.

Blue Aventurine dial in Natural Grade 5 Titanium on Titanium Bracelet
Current viewBlue Aventurine / Natural Titanium / Titanium Bracelet
01 Dial
02 Case
03 Strap

Saturated midnight-blue glass with a bright, natural-looking field of shimmer.

Configure & Order

Four dial materials

Choose How You Want the Sky to Look.

Each material responds to light differently, from a quiet black shimmer to bright white enamel.

Black Aventurine dial detail
01

Black Aventurine

Deep black glass with fine mineral flecks that appear as the dial moves through the light.

Aventurine under moving light
02

Blue Aventurine

A saturated midnight blue with a bright, natural-looking field of shimmer.

Ultra Black Enamel dial detail
03

Ultra Black Enamel

A clean, deep-black enamel surface that puts the constellation map in sharp focus.

White Dwarf dial in natural titanium on the wrist
04

White Dwarf

Bright white enamel with a subtle stone-like finish and softly visible constellations.

Compare every dial

Why Grade 5 titanium

Strong.
Light.
Comfortable.

Every ChronoAstra case is machined from Grade 5 titanium for its strength, low weight and everyday comfort, then paired with a bracelet clasp that can be fine-tuned without tools.

Tool-free bracelet micro-adjustment

A precise fit, whenever you need it.

Adjust without toolsFine on-wrist fitGrade 5 titanium clasp
01

Two Unisex Sizes

The refined 34 mm is ideal for women and men with smaller wrists; the 40 mm offers a bolder presence.

02

Built for Daily Use

High strength, natural corrosion resistance and a sapphire crystal.

03

Three Surface Finishes

Brushed, sandblasted and mirror-polished sections give the case its definition.

04

Natural or Black DLC

Choose raw titanium or a black DLC coating. Both retain the contrast between polished and brushed surfaces.

Decagonal case · Integrated bracelet

The case design

A Ten-Sided Bezel You Can Recognize at a Glance.

The decagonal bezel gives ChronoAstra its shape. Its alternating surfaces pick up the light, while the integrated case and strap sit naturally around the wrist.

The result is distinctive, clean and easy to wear.
40 mm · 48 mm lug to lug34 mm · 41 mm lug to lug8.5 mm quartzApprox. 9.95 mm automatic5 ATM
Miyota 9039 · Automatic movement assembly

Quartz or automatic

Choose the Movement That Fits You.

Quartz

Swiss Ronda Quartz

Accurate, low maintenance and only 8.5 mm thick, with an approximate 40-month battery life.

Precise · Slim · Simple
Automatic

Miyota 9000-Series Automatic

A high-beat mechanical movement powered by your wrist, visible through a sapphire caseback with a custom Côtes de Genève rotor.

Mechanical · Smooth sweep · Display back

Your details on the caseback

The Front Shows the Sky.
The Back Records the Moment.

We engrave your location, date and time on the caseback, along with up to 14 characters of personal text. It can be a name, initials or a short phrase.

The watch carries both the sky and the reason you chose it.
From starmap dial to sapphire display back

Backed by collectors

More Than €700,000 Raised on Kickstarter.

ChronoAstra started with a simple idea: make a watch around one person’s real moment. In 2025, collectors around the world backed that idea and helped us put it into production.

€700K+raised on Kickstarter
Independentdesigned and developed by ChronoAstra
One real momentbehind every starmap
2 yearsinternational limited warranty
Watchmaker inspecting ChronoAstra components
ChronoAstra founder inspecting a starmap watch

Technical specifications

The Details, All in One Place.

Case
34 mm or 40 mm Grade 5 titanium (Ti-6Al-4V), signature ten-sided bezel, screw-down crown, and brushed, sandblasted and hand mirror-polished finishing. Natural titanium or black DLC.
Lug to lug
41 mm (34 mm) / 48 mm (40 mm).
Thickness
8.5 mm quartz / approximately 9.95 mm automatic.
Crystal
Flat scratch-resistant sapphire crystal with five-layer inner anti-reflective coating.
Dial
Black Aventurine, Blue Aventurine, Ultra Black Enamel or White Dwarf, with an individually generated starmap.
Lume
Swiss Super-LumiNova BGW9 on stars, constellations and hands.
Hands
Polished and rhodium-plated, with BGW9 lume.
Automatic movement
Miyota 9000-series automatic; 24 jewels, 28,800 vibrations per hour, approximately 42-hour power reserve, custom Côtes de Genève rotor and sapphire display back.
Quartz movement
Swiss Ronda 763; approximately 40-month battery life and slim quartz construction.
Caseback
Solid titanium on quartz or sapphire display back on automatic. Individually engraved with location, date, time and up to 14 characters of personal text.
Water resistance
5 ATM / 50 metres.
Straps
Integrated FKM rubber, leather or Grade 5 titanium bracelet, subject to selected configuration.
Warranty
Two-year international limited warranty.
Case+

34 mm or 40 mm Grade 5 titanium (Ti-6Al-4V), signature ten-sided bezel, screw-down crown, and brushed, sandblasted and hand mirror-polished finishing. Natural titanium or black DLC.

Lug to lug+

41 mm (34 mm) / 48 mm (40 mm).

Thickness+

8.5 mm quartz / approximately 9.95 mm automatic.

Crystal+

Flat scratch-resistant sapphire crystal with five-layer inner anti-reflective coating.

Dial+

Black Aventurine, Blue Aventurine, Ultra Black Enamel or White Dwarf, with an individually generated starmap.

Lume+

Swiss Super-LumiNova BGW9 on stars, constellations and hands.

Hands+

Polished and rhodium-plated, with BGW9 lume.

Automatic movement+

Miyota 9000-series automatic; 24 jewels, 28,800 vibrations per hour, approximately 42-hour power reserve, custom Côtes de Genève rotor and sapphire display back.

Quartz movement+

Swiss Ronda 763; approximately 40-month battery life and slim quartz construction.

Caseback+

Solid titanium on quartz or sapphire display back on automatic. Individually engraved with location, date, time and up to 14 characters of personal text.

Water resistance+

5 ATM / 50 metres.

Straps+

Integrated FKM rubber, leather or Grade 5 titanium bracelet, subject to selected configuration.

Warranty+

Two-year international limited warranty.

ChronoAstra watch worn on the wrist

ChronoAstra Stories

Every Watch Begins
with a Reason.

Discover the moments owners chose to preserve, the configurations they wear and their experience with ChronoAstra. Stories and reviews are part of the same ChronoAstra experience, and matching reviews appear beside the watch you configure.

Read owner stories Write a review

Verified collector reviews

The Watch,
in Their Words.

Published ChronoAstra Stories reviews appear here automatically. In the order atelier, the closest reviews are matched to the dial and configuration you choose.

Read all reviews Write a review

Made for one moment

Ready to See Your Sky
on a Watch?

Enter the order atelier without signing up, choose every detail, and save the finished configuration by email whenever you are ready. Quartz begins at €799 and automatic at €999.

Configure now · No email required
or join launch updates

Already own a ChronoAstra?

Straps for existing owners.

Integrated Grade 5 titanium bracelets, Swiss FKM rubber and leather, cut for the 34 mm and 40 mm case in Natural Titanium or Black Titanium hardware. These are the last pieces from the launch run.

  • Titanium bracelet from €299
  • FKM rubber from €119
  • Very limited · 1–3 remaining
Shop straps
Configure Yours · From €799