A Distinctive Chronomat for Everyday Use

The Chronomat B31 Automatic 40 in green offers a more expressive take on the collection, combining modern colour with reliable mechanical performance. With its extended power reserve, balanced proportions, and streamlined design, it delivers a confident and practical approach to a contemporary sports watch.

Green Dial with Depth and Strong Visual Presence

The dial is defined by a deep green tone that gives the watch a more distinctive and expressive character. Compared to lighter or more neutral variants, this execution introduces a richer visual weight while maintaining clarity across the display.

The absence of additional complications keeps the surface open and structured, allowing the time to be read instantly. A date display is integrated to support practicality, ensuring the watch remains functional for daily use while preserving overall balance.

Next-Generation Manufacture Movement Performance

The Chronomat B31 Automatic 40 is powered by the Breitling Manufacture Calibre B31, a self-winding mechanical movement developed for durability and extended performance. It provides approximately 78 hours of power reserve, allowing the watch to operate across multiple days without winding.

The movement is engineered for stable timekeeping and consistent operation, supporting the watch’s role as a reliable daily companion while maintaining a relatively compact case profile.

40mm Steel Case with Balanced Everyday Proportions

The stainless steel case measures 40mm, offering a size that balances presence with comfort. Its proportions are designed to suit a wide range of wrists while maintaining the structural strength expected from a sports watch.

With a slim profile and water resistance rated to 200 metres, the case is built for everyday adaptability, capable of handling both regular wear and more demanding conditions.

The overall design prioritises wearability without reducing the durability that defines the Chronomat.

Rouleaux Bracelet with Signature Construction

The watch is fitted with the Rouleaux bracelet, a defining feature of the Chronomat collection. Its rounded links provide flexibility and stability, allowing the watch to sit comfortably on the wrist throughout the day.

The bracelet integrates directly into the case design and includes an adjustment system that allows for quick and precise sizing, supporting long-term comfort and secure wear.

Technical Specifications

Case

Stainless steel
Diameter: 40mm
Thickness: 10.99mm
Water resistance: 200m
Crystal: Sapphire

Dial

Green dial
Date display

Movement

Breitling Manufacture Calibre B31
Self-winding mechanical
Approx. 78-hour power reserve

Bracelet

Stainless steel Rouleaux bracelet