The skeleton calibres manufactured by Roger Dubuis in Geneva are the essence of the expressive singularity of the Excalibur collection. Complying with one of the most respected certifications of Haute Horlogerie, the Poinçon de Genève, the Excalibur watches are designed like contemporary works of art. Every single component being finished by hand, the watches are symbols of passion. The work of hyper-skilled craftsmen is at the forefront of each watch with a direct view on the creative mechanics making these pieces more alive than ever. CASE-Ceramic case Ceramic bezel Ceramic crown Sapphire crystal with anti-reflective coating Titanium DLC open case back with sapphire crystal Size: 42mm, Water Resistance: 10 bar (100 m),DIAL Black double surface flange with engraved minute track and transferred texts, polished and Grey hour markers with SLN in the center Main material: Ceramic STRAP According our non-exotic policy, Excalibur collection is adorned with a premium calf leather strap, built in volume to follow the design of the case and the movement. The strap is interchangeable thanks to Quick Release System. Black Leather CLASP Black DLC triple folding buckle interchangeable with Quick Release System - QRS Type: Titanium, MOVEMENT-Energy: Automatic, self-winding Indications: Hour - Minute Power reserve: 72 Hours