Swiss Ronda 763 Quartz
Slim, precise and close to maintenance-free, with roughly forty months of battery life and an 8.5 mm case profile. Finished with a solid titanium caseback, individually etched with your details.
€799
ULTRA BLACK ENAMEL · NATURAL TITANIUM
ChronoAstra Event Horizon
Where light meets absolute black.
Event Horizon pairs a near-void ultra-black enamel dial with hand-finished natural Grade 5 titanium. With no aventurine sparkle beneath it, every constellation line appears suspended against pure darkness.
- Dial
- Ultra Black Enamel
- Case
- Natural Grade 5 Titanium
- Sizes
- 34 mm · 40 mm
From €799 quartz · €999 automatic
Explore upcoming production windows
Configure this Event Horizon →Or reserve for €99 — credited toward your watch ↗
Made to order: production takes about 2–3 months for 40 mm and 3–4 months for 34 mm, and the dispatch window shown at checkout applies. Shipping speed applies only after your watch is finished. Launch offer: VAT, local taxes, import duties and worldwide shipping are all included in the price.
Preparing your watchLive 3D previewClick to rotate and zoom · scroll passes through to the page
Configure yours
ONE SKY. ONE DIAL. NEVER REPEATED.
Exact astronomy, pad printed for one owner.
We calculate the visible stars and constellation geometry for your coordinate, date and local time from astronomical data, then engineer that sky as production artwork for your chosen dial size. A dedicated pad printing cliché is produced for your watch alone.
The map is transferred by precision pad printing, the process used for fine detail on high-end dials, then completed through a four-stage print-and-lume process: the initial precision print followed by three registered applications of Swiss BGW9 Super-LumiNova. No two ChronoAstra dials carry the same sky.
See how your dial is pad printed →
ULTRA BLACK ENAMEL
A surface that seems to disappear.
Ultra Black Enamel removes visual noise. Its smooth, near-black depth gives the eye almost nothing to hold except the hands, indices and your personal sky. Unlike aventurine, it does not shimmer or compete. It creates stillness: an uninterrupted field from which the printed constellations emerge with remarkable graphic clarity.
Because the background is so controlled, every registration point matters. The one-of-one starmap is individually prepared and precision pad printed, allowing fine constellation lines and BGW9 luminous details to remain clean against the darkness.
THE MATERIAL ITSELF
Ultra Black Enamel
Glass-like depth.
Every Event Horizon begins with this surface. The blank is inspected, then the sky of your exact moment is precision pad printed onto it and completed with three registered applications of Swiss BGW9 Super-LumiNova.
NATURAL GRADE 5 TITANIUM
A bright frame for the void.
Natural titanium becomes the horizon around the black dial. Satin-brushed planes hold the watch's form in soft silver while mirror-polished bevels produce hard, fleeting lines of light. Dozens of separate surfaces are finished by hand over hours, giving the case enough presence to frame the dial without breaking its stillness.
Machined from solid Grade 5 titanium, the case and integrated bracelet require hours of hand finishing across dozens of individual surfaces. Broad satin-brushed planes give the watch its architectural calm; mirror-polished bevels trace the geometry in light. Each transition is finished deliberately so the case never looks flat: its character changes as the wrist moves.
WHY THIS PAIRING
Maximum clarity. Nothing unnecessary.
Event Horizon is the collection's purest black-and-silver statement: a precise titanium object built around an apparently endless centre.
CHOOSE YOUR MOVEMENT
Swiss quartz precision or Japanese automatic.
Miyota 9000-Series Automatic
24 jewels, 28,800 vibrations per hour and approximately 42 hours of reserve, with a custom Côtes de Genève rotor visible through a sapphire display back.
€999
YOUR MOMENT, FOREVER ETCHED
Individually etched with your details into the caseback.
Your exact date, time, coordinates and chosen word are individually etched into the caseback. The reverse of every Event Horizon carries the coordinates, date and local time of your moment, plus up to twelve capital characters of your own text: a name, a place, a single word. It is etched into the titanium, not printed on it.
Quartz builds receive a solid titanium caseback. Automatic builds receive a sapphire display back, with your individually etched details framed around the movement.
Technical specifications
- Dial
- Ultra Black Enamel, with your individually generated starmap.
- Case
- Natural Grade 5 Titanium, signature ten-sided bezel.
- Case sizes
- 34 mm and 40 mm.
- Movement
- Swiss Ronda 763 Quartz or Miyota 9000-series Automatic.
- Thickness
- 8.5 mm quartz / approximately 9.95 mm automatic.
- Crystal
- Flat scratch-resistant sapphire with five-layer inner anti-reflective coating.
- Water resistance
- 5 ATM / 50 metres.
- Starmap
- Precision pad printed and finished with Swiss BGW9 Super-LumiNova.
- Caseback
- Solid titanium on quartz or sapphire display back on automatic, individually etched with location, date, time and up to 12 capital characters.
ONE OF ONE
Build your Event Horizon.
The configurator opens with the Ultra Black Enamel dial and Natural Grade 5 Titanium case already selected. Choose your movement, size and strap, then define the exact sky of your moment.
Configure this model →Not ready? Reserve for €99 — credited toward your watch ↗
Made to order: production takes about 2–3 months for 40 mm and 3–4 months for 34 mm, and the dispatch window shown at checkout applies. Shipping speed applies only after your watch is finished. Launch offer: VAT, local taxes, import duties and worldwide shipping are all included in the price.
Aurora
White Dwarf
Starlight
Midnight Aurora