BRELLUM Duobox Chronometer

The Duobox Chronometer, the first timepiece from the independent Swiss watchmaking brand BRELLUM, features a timeless design and beats to the rhythm of an iconic horological engine.

BRELLUM Duobox Chronometer watch

Dressed in a solid stainless steel case, this timepiece’s aesthetic excellence is further highlighted by its sapphire crystal type box, its slightly domed dial surmounted by appliqués and its perfectly dimensioned hands.

BRELLUM Duobox Chronometer

The collection is named Duobox in reference to its two box sapphire crystals, formerly made of plastic. The first protects the dial and allows an optimal reading thanks to its anti reflective treatment; the second allows you to admire the automatic movement in detail and at all times. The contact of the sapphire with the skin offers to the wearer an optimal comfort.

BRELLUM Duobox Chronometer

Presently available in three shades – Silver, Grey Meteor and Deep Blue – the highly impressive and well arranged dial of Duobox Chronometer boasts both chronograph and basic timekeeping functions along with date display.

BRELLUM Duobox Chronometer

Powering these functions is the iconic Valjoux 7750 automatic movement renowned for its precision and robustness.

BRELLUM Duobox Chronometer watch black dial

This chronograph movement is officially certified by the COSC for its chronometric precision.  In addition, this beautifully decorated movement features a custom designed oscillating weight.

BRELLUM Duobox Chronometer watch case back view

In order to maintain the high levels of quality, each version of Duobox Chronometer will be produced in a limited edition to 299 pieces (per year).  Packed in an attractive box, each timepiece is supplied with the COSC chronometer certificate as an assurance of precision and quality.

BRELLUM Duobox Chronometer watch blue dial

The Duobox Chronometer is available either with leather strap or with stainless steel bracelet. Th retail price starts from CHF 2’220.- excl. taxes.

Technical details

Model: BRELLUM Duobox Chronometer

Caliber: BRELLUM BR-750-1 Chronometer automatic (base Valjoux 7750)
Certification: Chronometer Officially Certified by the COSC
Decoration: Spotting decoration, Côtes de Genève, oscillating weight BRELLUM
Technology: 25 jewels, 28’800 A / H, power reserve 46 hours

Hours, Minutes, Seconds, Date, Chronograph and pulsometer scale

Material: Stainless Steel 316L, DIN 1.4435
Diameter 41.80mm
Total thickness: 16.20mm
Crystal: Box type sapphire with anti-reflective treatment
Water resistance: 50m, 5ATM
Numbered caseback with Box type sapphire crystal, anti-reflective treatment
Weight: On leather strap (120 g) and Stainless Steel 316L bracelet (170g)

Domed curved, with appliques and luminescent material
Hands: Hours and minutes with luminescent material

Retail Price
With leather strap: CHF 2’220.- excl. taxes
With steel bracelet: CHF 2’270.- excl. taxes

Silver dial, black or brown leather strap
Silver dial, Stainless Steel Bracelet
Grey Meteor dial, black or grey leather strap
Grey Meteor dial, Steel bracelet
Deep Blue dial, blue or brown leather strap
Deep Blue dial, steel bracelet


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