The watch’s 42-mm case is made of matte black ceramic and features the airplane cockpit-clock “circle in a square” styling that is emblematic of the Bell & Ross brand. The name “Nightlum,” as one might expect, evokes the watch’s extreme luminosity in the dark of night, thanks to the application of green-tinted SuperLumiNova C3 to the big, Arabic numerals (at 12, 3, 6, and 9 o’clock); big stick indices (at the other hour positions); and thick, pentagon-shaped hour and minute hands (along with the tip of the central seconds hand). The dial also has a very unobtrusive date display, tucked away in a round window at 4:30.
Inside the 100-meter water-resistant case, behind a solid caseback, ticks the self-winding BR-CAL 302 movement, built on a Sellita SW300-1 base, which provides the watch a 42-hour power reserve, a hacking seconds function, and a quick date change. The Super-LumiNova C3 on the dial is described by Bell & Ross as “ultra-phosphorescent,” meaning the green glow it emits is not only brighter than the norm, but also longer-lasting. Completing the picture, and echoing the hue of the dial’s nighttime glow, is the watch’s gray-green lambskin strap, lined with resilient black synthetic fabric and fastening to the wrist with a black PVD-coated steel pin buckle.
The Bell & Ross BR03-92 Nightlum retails for $3,800.