Bell & Ross’ BR-X5 Green Lum is their most sci-fi watch yet Bell & Ross’ BR-X5 Green Lum is their most sci-fi watch yet

Bell & Ross’ BR-X5 Green Lum is their most sci-fi watch yet

Kieran Robson
  • Bell & Ross’ latest limited edition full lume watch takes a different approach by making its case glow rather than its dial.
  • The BR-X5’s sandwich case has been imagined in an innovative composite luminous material, LM3D.
  • Limited to 500 pieces, it’s their most technical full lume watch yet.

Since 2017, Bell & Ross’ Lum collection has stood out as some of their most desirable (and recognisable) pieces. While not all of the watches in the Lum collection have full lume dials, it’s become a bit of a signature for Bell & Ross… But their latest piece, the BR-X5 Green Lum, has switched things up as it’s one of the only watches with a full lume case.

br x5 green lum day and night

The material used to create this effect is a photoluminescent composite made from quartz fibres called LM3D, which is made exclusively for Bell & Ross. Matte in appearance, it’s a robust material that’s similar to some of the fibreglass composites used by high-end brands like Franck Muller and Richard Mille.

The BR-X5 Green Lum has a multi-part case structure that alternates between this LM3D material and grade 2 micro-blasted titanium. This goes as well for the crown and crown guard, which are also microblasted titanium. This is then finished in a DLC coating creating a matte finish on the metals, complimenting the matte black dial and ultimately working to show off the LM3D case. Legibility at night will not be an issue with this watch – just don’t be surprised when you look down and see your entire wrist glowing…

br x5 green lum exploded

The squared-off case looks like it has been lifted straight out of the instrument cluster of an F-18, and is 41mm in diameter and slightly on the larger side, being 12.8mm thick. The dial is matte black and is on the busy side: a sub-dial at 9 o’clock tracks the power reserve up to 70 hours, and looks reminiscent of a fuel gauge, while the date window at 3 o’clock also looks akin to an altimeter. Applied indices have been used for the hour and minute markers with Super-LumiNova used for the hour and minute hands.

br x5 green lum day on wrist

While there is no doubt in my mind that the full lume case is the talking point of this watch, strip back all that light show and remove the titanium case and inside you will find a movement designed and manufactured by modern-day movement royalty Kenissi. The BR-CAL.323 is a chronometer-certified movement with a 70-hour power reserve that’s similar to the movement used in the now-discontinued Tudor North Flag. This movement is a huge step up in quality and horological competency for Bell & Ross, making the BR-X5 Green Lum arguably their most technical full lume watch yet.

br x5 green lum night on wrist

This might be a pilot’s watch nominally, but I reckon the BR-X5 Green Lum would really come into its own as a swimming companion. A screw-down crown and 100 metres of water resistance mean that, if you’re so inclined, you could witness the LM3D photoluminescent case work its magic underwater – and magic would definitely be the word.

Bell & Ross BR-X5 Green Lum pricing and availability

The Bell & Ross BR-X5 Green Lum is limited to 500 pieces and is open for pre-orders with delivery slated for December. Price: A$19,900

Brand Bell & Ross
Model BR-X5 Green Lum
Reference Number BRX5R-LUM-TC/SRB
Case Dimensions 41mm (D) x 12.8mm (T)
Case Material LM3D green luminescent fiberglass composite and grade 2 titanium with DLC finish
Water Resistance 100 metres, screw-down crown
Crystal(s) Sapphire
Dial Matte black, applique indices filled with black varnish
Lug Width Integrated
Strap Black openworked rubber with DLC steel folding clasp
Movement BR-CAL.32 produced by Kenissi, COSC, automatic
Power Reserve 70 hours
Functions Hours, minutes, seconds, date, power reserve indicator
Availability Limited to 500 pieces, open for pre-order, deliveries December 2023
Price A$19,900