First Look: Brellum Duobox Classic LE.3, a COSC-Certified Chronograph with a Triple Calendar and Moonphase

Brellum knows how to pack value into a watch. That was evident with the brand’s earliest watches (which we reviewed early last year), and we continue to see the same bang-for-your-buck ethos threading through Brellum’s current lineup. Brellum’s latest is a limited edition dubbed the Duobox Classic LE.3, which takes the brand’s foundational Duobox template and renders it in a stunning piece chock-full of complications housed within a COSC-certified movement. I won’t get too into the weeds here with the specs and dimensions (you can refer to the above-mentioned review for all of that), but I will share my overall impressions having handled a prototype at Baselworld. The Duobox Classic LE.3 is, by all standards, a luxury watch being offered direct to consumers without the heavy baggage of a retail markup. Were this being sold by a retail brand, the numerous complications coupled with the extremely high level of finishing and the COSC certification would come with quite the surcharge. Here, you get all of that for CHF 3,190, or roughly $3,217 as of this writing. As a point of comparison, an IWC Pilot’s Chronograph with an IWC cal. 79320, essentially a modified 7750, retails for just a hair under $5,000.


Aesthetically, the Duobox Classic LE.3 skews toward the dressier end of the design spectrum, with a sunburst, anthracite-gray dial and applied, polished Roman numeral indices that draw your eye to the watch. In addition to the chronograph, you have the following complications: a pointer date, day and month apertures at the 12 o’clock register, a day and night indicator at nine, and a moonphase at six.

Powering the watch is a COSC-certified Valjoux 7751. It features perlage, Geneva stripes, blued screws, and a branded and coated (gold 5N) rotor.

The Duobox Classic LE.3 comes mounted on a brown alligator band with a steel folding clasp, and it’s limited to just 13 units. All in all, this is a killer package, and one that’s largely unmatched on the market. If the styling works for you, it’s definitely worthy of your consideration.

For more information, visit Brellum.

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Ilya is Worn & Wound's Managing Editor and Video Producer. He believes that when it comes to watches, quality, simplicity and functionality are king. This may very well explain his love for German and military-inspired watches. In addition to watches, Ilya brings an encyclopedic knowledge of leather, denim and all things related to menswear.