Dubai Watch Week 2023: The Bell & Ross BR-X5 Green Lum takes luminescence to the next level

The entire case of the Bell & Ross BR-X5 Green Lum glows bright green in the dark, thanks to a new material called LM3D, developed especially for the brand
Luminescence might be the mainstay of hands, indexes and hour markers, but this year has seen several brands play with the concept in novel ways. We talked about it here. Now adding to different executions of luminescence is Bell & Ross’s latest timepiece, the BR-X5 Green Lum, whose case is constructed from a new photoluminescent material called LM3D which glows green in the dark – it has been, developed especially for the brand. 

The timepiece is also the latest watch in the brand’s LUM line, which was introduced in 2017. The LUM line, as the name indicates, focuses on luminescence, and in the past has included models like the 2019 BR 03-92 FULL LUM whose dial was covered entirely in Super-LumiNova, and the 2020 BR 03-92 GREY LUM whose intense green glow was reminiscent of landing strip lights, and the BR 03-92 Diver FULL LUM, with a dial featuring different shades of light green and pale yellow luminescence.  

And now the 41mm BR-X5 Green Lum has debuted. What makes the timepiece even more striking is that it debuts in Bell & Ross’s relatively new case construction, one that was introduced in the BR-X5 line in 2019. Not only did it mark an important progression of the BR-05 line, but it did so with substantial developments in both the technical and design aspects. The design of the BR X5 was more potent yet sleeker, with an innovative, multi-layered, multi-material case design best appreciated from the side. Inside it beat a new manufacture movement by Kenissi that was more powerful and longer lasting (70 hours). 

Given this, the Bell &Ross BR-X5 Green Lum’s case features LM3D and grade 2 micro-blasted black DLC titanium in a multi-layer assembly. Not much about the LM3D has been revealed in the brand’s official communication, except that it is made of quartz fibres and emits a powerful green glow. It is between two layers of LM3D that the mechanism is housed. There is a fixed bezel in Grade 2 microblasted titanium with bezel insert in luminescent composite. The screw-down crown and crown guards are both in Grade 2 titanium, as is the caseback in Grade 2 microblasted titanium with smoked grey sapphire crystal with anti-reflective coating.

The dial is matte black, with the indexes filled with black varnish. The hour and minute hands are skeletonised and covered with Super-LumiNova®. A date aperture rests at 3, while opposite it, at 9, is the power reserve indicator. The wtach is water resitsant to 100 metres, and comes with a black openworked rubber strap. 

The watch is a limited edition of 500 pieces. 

Images: Courtesy Bell & Ross


BR- X5 Green Lum


Bell & Ross




Hours, minutes, and seconds, date, power reserve


Automatic BR-CAL.323, with approximate power reserve of 70 hours


Grade 2 titanium with DLC and LM3D


Black rubber with steel folding buckle with DLC finish




Upon request

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