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The Encyclopedia of Horology

Wristwatch · Manual-wind wristwatch

Breguet Classique Chronométrie 10 Hz Ref. 7727BR/12/9WU

Partially verified

The Breguet Classique Chronométrie 10 Hz, reference 7727BR/12/9WU, is a manual-wind wristwatch housed in an 18K rose gold case measuring 41mm in diameter. The watch features a silvered guilloché dial with black Roman numerals and a blued steel Breguet handset. Complications include a power reserve indicator located between 11 and 12 o'clock, a small seconds register at 12 o'clock, and a central seconds hand designed to display 1/10-second increments. It is powered by the manual-wind Caliber 574DR, a high-frequency movement operating at 10Hz, or 72,000 vibrations per hour. The movement utilizes a silicon escapement and balance spring, alongside a magnetic pivot system. The watch is presented on a black alligator leather strap with an 18K rose gold deployant buckle and includes an inner box, pamphlets, and a certificate of origin.

Front view of the Breguet Classique Chronométrie, showing the silvered guilloché dial and the 10 Hz marking.
Front view of the Breguet Classique Chronométrie, showing the silvered guilloché dial and the 10 Hz marking. — Analog:Shift. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
shop.analogshift.com
Category
Wristwatch · Manual-wind wristwatch
Maker / attribution
Breguet
Reference
7727BR/12/9WU
Catalogue / lot identifier
Source URL identifies the listing
Source-reported date
Not established
Source-reported place
Not established
Source-reported serial
4422

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 Dial Design

The watch is constructed with an 18K rose gold case measuring 41mm in diameter, featuring a stepped bezel, straight lugs, and a signed crown. The assembly uses sapphire crystal.

The silvered guilloché dial serves as the primary visual element, incorporating black Roman numerals and a blued steel Breguet handset. The dial layout includes a power reserve indicator positioned between the 11 and 12 o'clock markers, with a small seconds register at 12 o'clock and a central seconds hand that marks 1/10-second increments.

Evidence for this section
  • “Housed in an 18K rose gold case measuring 41mm in diameter, it features a stepped bezel, signed crown, straight lugs, and sapphire crystal.”
  • “Its silvered guilloché dial is complemented by black Roman numerals, a blued steel ‘Breguet’ handset, a power reserve indicator between 11 and 12 o’clock, a small seconds register at 12 o’clock, and a striking central seconds hand capable of displaying 1/10-second increments.”

Movement Specifications

The timepiece is powered by the Breguet Caliber 574DR, a manually wound movement known for its high-frequency performance at 10Hz, which equates to 72,000 vibrations per hour.

This movement integrates modern technical components, specifically a silicon escapement and silicon balance spring. Furthermore, the caliber incorporates a magnetic pivot system intended to enhance the stability and precision of the balance, resulting in a stated precision rate of -1/+3 seconds per day with a 60-hour power reserve.

Evidence for this section
  • “Powering the watch is Breguet’s manually wound Caliber 574DR, an extraordinary high-frequency movement beating at 10Hz — or 72,000 vibrations per hour.”
  • “The movement incorporates a silicon escapement and balance spring alongside an innovative magnetic pivot system designed to improve the stability and precision of the balance.”
  • “The result is a remarkably accurate mechanical wristwatch that can achieve a stated precision of -1/+3 seconds per day, while retaining a 60-hour power reserve.”

Accompanying Items

The object is sold as a complete set including its original documentation and presentation materials. This includes an inner box, instructional pamphlets, and the certificate of origin.

The watch is fitted with a signed black alligator leather strap and finished with an 18K rose gold deployant buckle.

Evidence for this section
  • “Paired to a signed black alligator leather strap with an 18K rose gold deployant buckle, this example is accompanied by its inner box, pamphlets, and certificate of origin.”

Open research questions

  • Does the movement contain a specific service history record linked to the serial number?
  • Is the '10 Hz' marking on the dial specific to this model generation or updated across later production runs?

Source evidence

Recorded claims and source quotations for Breguet Classique Chronométrie 10 Hz Ref. 7727BR/12/9WU
FieldSource-reported valueSource quotation
Case material18K rose gold“Housed in an 18K rose gold case measuring 41mm in diameter”
Movement caliberBreguet Caliber 574DR“Powering the watch is Breguet’s manually wound Caliber 574DR”
Frequency10 Hz (72,000 vph)“an extraordinary high-frequency movement beating at 10Hz — or 72,000 vibrations per hour.”
Movement featuresSilicon escapement and magnetic pivot system“The movement incorporates a silicon escapement and balance spring alongside an innovative magnetic pivot system”
Case diameter41mm“Housed in an 18K rose gold case measuring 41mm in diameter”
Power reserve60 hours“while retaining a 60-hour power reserve.”
Dial detailsSilvered guilloché with Roman numerals“Its silvered guilloché dial is complemented by black Roman numerals”
StrapSigned black alligator leather“Paired to a signed black alligator leather strap”

Visible details

  • Case features a stepped bezel
  • Crown is signed with a Breguet logo
  • Dial indicates a 10 Hz frequency
  • Case construction includes straight lugs

Research qualifications

  • Movement internal components not visible in provided photographs
  • Certificate of origin details not provided in visual or textual source

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

Consulted source

ساعت مچی Breguet Classique Chronométrie «10 Hz» رفرنس 7727BR/12/9WU

Reviewed 2026-11-02 · Record 5155c3b77a

Terms in this record

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

Other manual-wind wristwatch records