The Bell & Ross LUM collection, launched in 2017, focuses on luminescence in watch design, enhancing readability in all lighting conditions. The BR-X5 GREEN LUM, part of this series, introduces the innovative LM3D material, a composite offering exceptional luminescence. This model, a continuation of the BR 05 range started in 2019, features the Bell & Ross signature “round within the square” design. The BR-X5 GREEN LUM incorporates the BR-CAL.323 calibre, a movement created by Kenissi, which offers a 70-hour power reserve and a case design that emphasizes purity and resistance while maintaining lightness. The BR-X5 GREEN LUM’s 41mm case glows using the LM3D material. This material, developed specifically for Bell & Ross, consists of quartz fibers that emit a strong green glow, thereby illuminating the entire case in the dark. The watch’s time indications – hours, minutes, seconds, date, and power reserve – are also prominently visible. The case, crafted from DLC-coated grade 2 titanium, is flanked by LM3D shields. This limited-edition series of 500 pieces transcends its watchmaking utility, positioning itself as a unique conceptual art object.