Roger Dubuis Excalibur Bi-retrograde Calendar (2025)

This model features a 40mm diameter case made from 18k pink gold, with a thickness of 11.7mm. It includes a sapphire crystal with display case back and is water-resistant to 100m. The dial showcases a mother of pearl(MOP) insert with applied indexes. It’s powered by the new automatic in-house calibre RD840, featuring a day-date display, a safety system for setting time backwards, and a unidirectional winding single barrel, certified by the Geneva Seal. Power reserve is 60 hours. Priced at CHF 56,500