Brellum Duobox LE.4

Press release: Brellum Duobox Classic LE.4 Chronometer

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With great joy, I present you this evening the latest addition in the Brellum family – Brellum Duobox Classic LE.4 Chronometer. Why this enthusiasm? Simple! Since the first Brellum Duobox Chronometer (powered by a calibre based on the Valjoux 7751), I was waiting patiently this triple calendar, moon phase. As you might have already guessed, the newest timepiece is powered by a movement based on the great Valjoux 7751. A review will follow after I will get my hands on it at Baselworld.

Brellum Duobox Classic LE.4 Chronometer
Brellum Duobox Classic LE.4 Chronometer

The brand’s emblematic collection, Brellum Duobox, is enriched with a new classic Limited Edition that will delight collectors eager for beautiful complications.

Valjoux 7751

In addition to the chronograph function, Brellum Duobox LE.4 offers a triple calendar, with date, day and month indication, a day/night indicator and moon phase display.

Brellum Duobox Classic LE.4 Chronometer
Brellum Duobox LE.4 day /month indication

Limited to 17 pieces worldwide, the COSC LE.4 movement is entirely decorated and adorned with a numbered rotor, treated in NAC Anthracite and a lunar symbol in Rhodium.

Brellum Duobox LE.4 comes with a hand made, large-scaled black alligator leather strap mounted on a decorated steel deploying buckle.

Brellum Duobox Classic LE.4 Chronometer
The date and the moon phase indication

Brellum Duobox Classic LE.4 Chronometer


BRELLUM BR-751-TCMP Automatic Chronometer (Valjoux 7751 base)


  • Officially Chronometer certified movement (COSC)


  • Perlage,
  • Geneva stripes,
  • blue screws,
  • numbered rotor from 01/17 to 17/17


  • 25 jewels,
  • 28’800 A/h,
  • 46 hours power reserve;
  • Incabloc, Glucydur Balance, Nivarox Alloy Hairspring typ Anachron


  • Hours, Min., Sec.,
  • triple calendar (day, date, month),
  • chronograph,
  • day/night indicator,
  • moon phase indicator



  • Stainless Steel 316L, DIN 1.4435


  • Diameter 41.80mm,
  • thickness 11.20mm without crystals, 16.20mm total


  • Box sapphire crystal with anti reflexion coating on both sides


  • Silver Snow Opalin,
  • domed, indexes with luminous material (Superluminova)


  • Hours and Minutes with luminous material (Superluminova)

Water resistance:

  • 50m, 5ATM

Case back:

  • Stainless Steel,
  • numbered with box sapphire crystal,
  • anti-reflection coating


  • 120g on genuine black alligator leather strap mounted on decorated steel deploying buckle

Price CHF 3’190.- HT, delivery starting May 2019

For more information please visit the Brellum Watches Website.

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