Roger Dubuis launches another Blacklight Edition model, the Excalibur Blacklight Spin-Stone Monobalancier. Although the novelty remains true to its line with Roger Dubuis’ skeletonised signature, the new Hyper Horology watch is a true pioneer of the collection thanks to a novel synthetic process.

Roger Dubuis Ecalibur Blacklight Spin Stone MB RDDBEX0950background

The case

The case of the Excalibur Blacklight Spin-Stone Monobalancier has a diameter of 42 mm and is made of Eon gold. Precious stones that shine in a vivid spectrum of colours decorate the bezel and the flange. The red and blue colour of the gemstones is created by a LumiNova coating that fluoresces both during the day and at night and under UV light. To achieve evenness and luminescence of the stones, the so-called spin-stones were grown synthetically in a special method. This innovative concept of stone refinement is a novelty and has been patented by the Manufacture.


The dial

The 3D spinels that appear on the dial form the striking frame of the calibre. Micro-rays of different colours form the shape of Roger Dubuis’ signature star. At its centre is a fluorescent diamond for added impact. The hands in pink gold are satin-finished and have a brushed surface, while at the tip there is a shot-blasted surface with a grey look.


The movement

The pioneer of the Excalibur range is powered by the RD720SQ calibre, which is composed of 178 components. The movement has a power reserve of 72 hours, a height of 5.95 mm and operates at a frequency of 4 Hertz. The improved micromotor of the Excalibur Blacklight Spin-Stone Monobalancier minimizes the vibration of the movement. In order to design a movement that is less sensitive to shocks, the inertia of the balance was doubled. The shape of the escapement has been optimized to achieve greater efficiency in energy transmission.


Price & Availability

The Excalibur Blacklight Spin-Stone Monobalancier comes with a calfskin strap that can be replaced at any time using the quick-change system. The number of pieces of the Excalibur is limited to 28. Interested parties can purchase the timepiece for 167.500 Euro.


BRANDRoger Dubuis
MODELExcalibur Blacklight Spin-Stone Monobalancier
WATER RESISTANCE10 bar (~100m)
STRAP/BRACELETCalfskin bracelet
FREQUENCY28,800 vph (4Hz)
FUNCTIONSHours, minutes
PRICEEUR 167 500, limited to 28 pieces