Skip to content
Breitling Chronomat B01 42 Green Chronograph (Ref. UB0134131L1S1), 2025 — view 1 of 6
View 1 of 6 · Image: Huntington Company · original image source (opens another website in a new tab)

Wristwatches · Wristwatch

Breitling Chronomat B01 42 Green Chronograph (Ref. UB0134131L1S1), 2025

DocumentedDocumented from a dealer's listing; attribution and date as stated by the dealer.
Maker / attribution
Breitling (maker)
Date
2025
Country of origin
Switzerland
Object type
Wristwatch
Dimensions
Case 42 mm
Stock no.
Product 8364439142583
Credit line
Dealer listing, Huntington Company (product 8364439142583)
Catalogue title (original)
2025 Breitling Chronomat B01 42 Green Chronograph - Box and Papers (Ref. UB0134131L1S1) (English)

View the source record (dealer listing) ↗ (opens another website in a new tab)Suggest a correction

Record summary

Catalogued by Huntington Company (dealer) (stock number Product 8364439142583), this is a wristwatch by Breitling, made in Switzerland, dated 2025. The Atlas places it in the Contemporary Horology period (2010 – Present) of its Wristwatches collection. Recorded dimensions: Case 42 mm. The record is illustrated with 6 photographs.

Assembled from the source record's structured fields. Dates and attributions are given as the source states them; where a field is missing the Atlas leaves it blank rather than estimating.

Catalogue description

Dealer description — Huntington Company

History and Significance The Breitling Chronomat is one of the brand’s most important modern pillars, originally developed as a robust chronograph for professional use and later refined into a versatile luxury sports watch. The contemporary Chronomat B01 42 brings that legacy forward with a balanced case size, strong wrist presence, and Breitling’s in-house chronograph movement. This example stands out with its deep green dial paired with a two-tone stainless steel and 18k red gold case, offering a more elevated take on an otherwise tool-oriented design. The Chronomat remains one of the most complete expressions of Breitling’s identity, blending performance, durability, and everyday usability. Writer’s Thoughts The green dial and red gold accents work exceptionally well together, giving this Chronomat a more refined character without losing its sporty edge. At 42mm, it wears confidently but remains comfortable thanks to the well-shaped case and proportions. This is the type of watch that transitions easily from daily wear to more formal settings while still feeling unmistakably Breitling. Our Promise Every watch we offer is carefully inspected and verified for authenticity. We stand behind the integrity of each piece and represent it accurately and transparently. Our goal is to ensure complete confidence when purchasing from Huntington Company. Specifications Brand: Breitling Model: Chronomat B01 42 (Ref. UB0134131L1S1) Year: 2025 Case Material: Stainless steel with 18k red gold accents Case Size: 42mm Bezel: Unidirectional rotating bezel with rider tabs in red gold with steel insert Dial: Green sunburst dial with applied markers Crystal: Sapphire crystal Movement: Automatic Breitling manufacture Caliber B01 chronograph Strap/Bracelet: Green Breitling rubber strap Buckle/Clasp: Breitling stainless steel folding clasp Condition Case: Stainless steel case is in mint condition with very light surface wear visible only under close inspection. Case lines remain sharp. Bezel: Red gold and steel bezel is clean with minimal signs of wear and no notable marks. Crystal: Sapphire crystal is clean with no chips scratches or cracks. Dial: Green dial is flawless with crisp printing and well-preserved markers. Hands: Original hands are in excellent condition with no corrosion or damage. Strap/Bracelet: Original Breitling rubber strap is in excellent condition with minimal wear. Buckle/Clasp: Original Breitling clasp shows very light handling marks and functions properly.

Historical context

Contemporary Horology (2010 – Present)

Silicon components, connected watches, optical-lattice research clocks and a thriving independent scene.

Smartwatches became the world's best-selling watches, while mechanical watchmaking focuses on craft, innovation (silicon components, new escapements) and independent makers.

Read the period in the timelineMore wristwatches from this periodEarlier: Mechanical Renaissance

Atlas type guide

Chronographs and split-seconds watches

A chronograph is a watch with an additional seconds hand that can be started, stopped and returned to zero independently of the timekeeping. Louis Moinet built an early example in 1816 and Nicolas Rieussec a recording 'chronographe' in 1821; Adolphe Nicole's heart-shaped reset cam (patented 1862) made the modern return-to-zero possible. Split-seconds (rattrapante) chronographs add a second hand that can be stopped for intermediate times; flyback chronographs restart instantly.

Chronographs were essential tools for doctors (pulsometer scales), artillery (telemeter), engineers and sport. In wristwatches, Valjoux, Venus, Lemania and later the automatic chronographs of 1969 (Zenith El Primero, the Chronomatic Calibre 11 group and Seiko 6139) are milestones.

What to look for

  • Push-pieces on the case band or a single button in the crown (monopusher).
  • Subsidiary registers for minutes and hours; tachymeter, telemeter or pulsometer scales.
  • Column wheel versus cam control visible in the movement.
  • Calibre markings of specialist makers (Valjoux, Lemania, Venus, Landeron).

Dating clues

  • Pocket chronographs with heart cam reset: after 1862.
  • Wrist chronographs: from c. 1910; two-button designs from the 1930s.
  • Automatic chronographs: from 1969.

General guidance written by the Atlas editors about this kind of object. It is not a statement about this particular piece; for that, rely on the source record above and on physical examination.

Read next:Flyback chronographChronograph

Related records