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The Encyclopedia of Horology

Wristwatch · Chronograph

Breitling Chronomat Automatic Chronograph Watch B13050.1

Partially verified

This Breitling Chronomat wristwatch, reference B13050.1, is constructed in a 40mm round stainless steel case with yellow gold bezel accents and rider tabs. It features an analog blue dial with gold-tone Arabic numerals, luminous hands, a date window at 3 o'clock, and three chronograph sub-dials. The seller states that the watch is powered by an automatic Caliber ETA Valjoux 7750 movement featuring 25 jewels and hacking seconds. Fitted to a Breitling stainless steel bracelet, the timepiece incorporates an inner tachymeter scale, a screw-down crown, and a seller-reported water resistance rating of 100 meters.

Three-quarter view of the Breitling Chronomat reference B13050.1 on bracelet stand showing the blue dial and rider tab bezel
Three-quarter view of the Breitling Chronomat reference B13050.1 on bracelet stand showing the blue dial and rider tab bezel — Second Hand Horology. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
secondhandhorology.com
Category
Wristwatch · Chronograph
Maker / attribution
Breitling
Reference
B13050.1
Catalogue / lot identifier
WA-7277
Source-reported date
Not established
Source-reported place
Switzerland

Source-reported attribution and specifications are not independent authentication. A listing does not establish present ownership, current display, availability or permission to reproduce.

Object description

Case and External Construction

The Breitling Chronomat reference B13050.1 is housed in a 40mm stainless steel case. The design incorporates a unidirectional rotating bezel featuring yellow gold-tone rider tabs and screws. The case includes a screw-down crown and a screw-back design.

The timepiece is fitted with a stainless steel bracelet featuring a signed clasp. The case back is engraved with the text 'Manufacture En Suisse Chronographe 100M B13050.1'.

Evidence for this section
  • “housed in a 40mm stainless steel case accented by yellow gold rider tabs and bezel details”
  • “It features a unidirectional rotating bezel, screw-down crown, chronograph pushers”
  • “Case Back Markings: Manufacture En Suisse Chronographe 100M B13050.1”
  • “fitted with its original Breitling stainless steel bracelet with signed clasp”

Dial and Layout

The watch features a blue analog dial with applied gold-tone Arabic numerals and luminous hands. A white minute track and an internal tachymeter scale are present.

The chronograph layout features a 30-minute counter at 12 o’clock, small seconds at 9 o’clock, and a 12-hour counter at 6 o’clock. A date aperture is situated at the 3 o’clock position.

Evidence for this section
  • “The blue dial is enhanced by applied gold-tone Arabic numerals, luminous hands, and a white minute track.”
  • “The chronograph layout includes a 30-minute counter at 12 o’clock, small seconds at 9 o’clock, and a 12-hour counter at 6 o’clock.”
  • “A date aperture is positioned at 3 o’clock, and a tachymeter scale is present along the inner chapter ring.”

Movement Specifications

The watch is reported to be powered by an automatic Caliber ETA Valjoux 7750 movement featuring 25 jewels. The source lists features including a central chronograph seconds hand, small seconds, 30-minute and 12-hour counters, a quick-set date display, and hacking seconds.

The source claims the movement is COSC-certified, operates at 28,800 vph, and possesses an approximate power reserve of 42 hours. This internal movement was not visually verified in this record.

Evidence for this section
  • “powered by the Caliber ETA Valjoux 7750 automatic movement. It features 25 jewels”
  • “The movement is COSC-certified and operates at 28,800 vph with an approximate power reserve of 42 hours.”

Open research questions

  • Are the rider tabs on this reference solid yellow gold or gold-plated?
  • Can the specific production year be verified for reference B13050.1 via serial number, despite the serial being null in this record?
  • What specific diagnostic methodology is used by the seller to support the COSC-certified claim for this unit?

Source evidence

Recorded claims and source quotations for Breitling Chronomat Automatic Chronograph Watch B13050.1
FieldSource-reported valueSource quotation
ReferenceB13050.1“reference B13050.1”
CaliberETA Valjoux 7750“Caliber ETA Valjoux 7750 automatic movement”
Case Size40 mm“Case Size: 40”
Jewel Count25“Jewels: 25”
Water Resistance100 meters / 10 ATM / 330 feet“Water Resistance: 100 meters / 10 ATM / 330 feet”
Case Thickness14.5 mm“Case Thickness: 14.5”

Visible details

  • Blue dial with applied gold-tone Arabic numerals and luminous hands
  • Three chronograph sub-dials positioned at 6, 9, and 12 o'clock, with a date aperture at 3 o'clock
  • Steel rotating bezel fitted with gold-tone rider tabs and screws
  • Multi-link stainless steel bracelet displaying an open branded clasp mechanism

Research qualifications

  • Movement is unpictured; internal ETA Valjoux 7750 caliber specification relies on source reporting
  • No specific year or decade of manufacture is provided by the source

Photograph identity and source facts were screened before import; rights clearance remains pending.

Consulted source

Breitling Chronomat Automatic Chronograph Watch B13050.1 40mm Blue Dia – SECOND HAND HOROLOGY

Reviewed 2026-10-22 · Record 08c809e813

Terms in this record

Glossary explanations for terms named in this object’s record.

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