Chapitre 4 Onyx Flying Tourbillon Watch

Watch available for pre-order - estimated delivery September 2026

The Watch

A true tribute to elegance and Swiss engineering, this watch is defined by its polished 316L stainless steel round case measuring 41 mm. Its robust, finely crafted construction gives this prestigious timepiece a timeless quality. The minimalist design of the concave case draws the eye to the most subtle details, stripping away the superfluous to reveal what truly matters: movement, material, and light. With its flawless finish and a sleek profile of 9.75 mm thickness, this model adapts perfectly to the men's wrist, delivering both comfort and sophistication.

The Dial

The black onyx dial is a study in elevated minimalism, reflecting light with a polished mirror effect - no markers, no text, nothing to distract from its natural beauty. The dial reveals a flying tourbillon at 7 o'clock, bridgeless, offering a visual demonstration of gravity defied by mechanical complexity. The black-on-black logo is a subtle wink to those who appreciate minimalism and quiet elegance. The domed sapphire crystal with anti-reflective coating ensures optimal legibility in all conditions, playing with the contrast and clarity of the dial's refined architecture.

The Movement

At the heart of this extraordinary timepiece lies a Swiss manual-winding mechanical movement. This caliber, developed in collaboration with Olivier Mory, delivers an impressive 120-hour power reserve, maintaining optimal precision over several days. Running at a frequency of 21,600 vph (3 Hz), this movement is a technical masterpiece of precision and reliability. The flying tourbillon, prominently displayed, serves as the cornerstone of this piece - a testament to BA111OD's commitment to horological innovation and excellence.

The Strap

The black bovine leather strap with crocodile pattern completes this magnificent ensemble flawlessly. Its refined texture and subtle contrast stitching add an extra layer of elegance while ensuring lasting wrist comfort. The choice of leather underscores the watch's timeless character and sophisticated allure. The silver pin buckle provides a secure and elegant fastening, contributing to the overall harmony of this wearable work of art.

Water Resistance

Rated at 5 atmospheres, this watch delivers solid water resistance - shielding against accidental splashes and heavy rain alike. This specification ensures the watch maintains seamless performance and pristine aesthetics even in humid conditions.