Chapter 4 Onyx Flying Tourbillon
Chapter 4 Onyx Flying Tourbillon
Chapter 4 Onyx Flying Tourbillon
Chapter 4 Onyx Flying Tourbillon
Chapter 4 Onyx Flying Tourbillon
Chapter 4 Onyx Flying Tourbillon
Chapter 4 Onyx Flying Tourbillon
Chapter 4 Onyx Flying Tourbillon
Chapter 4 Onyx Flying Tourbillon
Chapter 4 Onyx Flying Tourbillon

Chapter 4 Onyx Flying Tourbillon

CHF 8,800.00
/
  • Swiss Made
Delivery: 6-8 months

Pure. Minimal. Hypnotic.

The Chapter 4 Onyx Flying Tourbillon is a bold exercise in restraint — a watch that strips away the superfluous to reveal only what matters: the movement, the material, and the light.

Housed in our new 41mm concave case crafted from polished 904L stainless steel, the piece features a deep black onyx dial, mirror-polished and left untouched. No markers. No text. Just the natural beauty of the stone, absorbing light like a black hole. The flying tourbillon at 7 o’clock floats freely, without an upper bridge — a mesmerizing display of balance and precision.

Beneath the sapphire box crystal, every detail is about clarity and contrast. The black-on-black logo is barely visible, by design — a quiet nod rather than a shout.

Powered by a hand-wound Swiss movement with 120 hours power reserve developed with Olivier Mory, this piece is for those who understand the value of silence in design and the poetry of mechanics in motion.

This is more than a timepiece. It’s a statement of intent.

  • Free worldwide shipping
  • Returns within 14 days
  • 3 Years international warranty

MOVEMENT
Manual-winding mechanical movement BA.02 (based on BCP Tourbillon), 21,600 vph (3 Hz), variable-inertia balance wheel, 19 jewels. Tourbillon at 7 o’clock.


FUNCTIONS:
Hours – Minutes
Flying tourbillon at 7 o'clock

POWER RESERVE
120 hours (5 days)

FREQUENCE
3hz (21'600 Alt/H)

CASE
Stainless Steel 904L with welded lugs, 41mm diameter, 9.75mm thickness

DIAL
Onyx stone dial with white Super-Luminova hands

GLASS
Box-shaped sapphire crystal with double anti-reflective coating

CROWN
At 4 o'clock, engraved with the BA111OD emblem

WATER RESISTANCE
5 ATM

MAGNETIC RESISTANCE
2000 Gauss

SHOCK RESISTANCE
5000G

STRAP
Black calf leather with crocodile-style embossing, pin buckle.

Available options:
• Credit Card (VISA, MasterCard, American Express)
• Direct bank transfer in 1x, 2x or 4x with no interests
• Apple Pay / Google Pay / Shop Pay Express checkout
• Twint (Switzerland)

For deliveries to United Kingdom and Canada, please note that taxes will be due upon delivery. Tax-exempt for the USA for all orders under $800.

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PURE, SUSPENDED and INTENSE

THE ART OF MASTERING GRAVITY

With its flying tourbillon appearing to float in mid-air, the Chapter 4 Infinity is a celebration of mechanical poetry. Freed from its upper bridge, the tourbillon rotates gracefully at 7 o’clock, compensating for the effects of gravity and enhancing chronometric precision. Its hypnotic motion reminds us that watchmaking, at its highest level, is not just engineering — it’s art.

A SCULPTURE IN BLACK

Set in a concave 41mm polished 904L steel case, this timepiece features a dial cut from natural black onyx — a smooth, dense variety of chalcedony prized for its deep, mirror-like surface. Polished to a high gloss, the stone offers a rich visual depth that draws the eye to the flying tourbillon suspended above. A discreet black-on-black logo adds a final touch of refinement, allowing the pure materials and mechanics to take center stage. Understated yet striking, it’s a study in refined minimalism.

A Legacy Reinvented

Rooted in Neuchâtel’s centuries-old watchmaking heritage, BA111OD continues to disrupt with innovation, daring, and accessibility. The Chapter 4 Onyx Flying Tourbillon is not just a tribute to tradition — it’s a bold evolution of it. Designed for those who seek both meaning and mastery in their timepiece.

BA111OD history

Customer Reviews

Based on 3 reviews
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(2)
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33%
(1)
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W
Watchamateur
Vers un design presque parfait

Si le tourbillon était éloigné du centre de 1 mm, ce serait bien mieux au niveau esthétique (à mon humble avis). Plus facile à dire qu’à faire, car il faudrait certainement agrandir un rien le diamètre du mouvement !

J
Jacques H.
Persönlich und kundenorientiert

Unmittelbar nach der Bestellung eines Tourbillon hat sich der Gründer persönlich gemeldet und hat sich die Zeit genommen, ein Kundengespräch zu führen. Was für eine freudige Überraschung im Zeitalter von KI. Ich freue mich schon sehr auf die Lieferung des BA1110D Chapitre 4 Onyx Flying Tourbillon.

Danke Jacques !
Thank you for sharing the passion !

M
Mange H.
Descriptif de base nuit - Quelle valeur vraiment fait en Suisse ?

Le descriptif est tellement ronflant et pompeux que cela nuit a la crédibilité. Le story telling doit être maîtrisé. Question: comme Code41 pouvez vous indiquer la provenance de tout vos composants et la rebelle valeur "fait en Suisse" ?

Merci pour le partage de votre opinion,
La passion et l'audace caractérisent le travail de nos équipes, et oui, nous sommes fiers de la légitimité horlogère acquise en un peu plus de 5 ans.
Nous sommes également très fiers de travailler avec des partenaires suisses :
Origine de la boite: Le Locle
Origine du cadran: La Chaux-de-Fonds
Origine des aiguilles : Grenchen
Origine du mouvement : La Chaux-de-Fonds

Back to Chapter 4

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