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 espected 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 Black DLC titanium case with sapphire crystal and anti-reflective coating Black DLC titanium bezel Black DLC titanium crown Black DLC titanium open case back with sapphire crystal and anti-reflective coating 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: Titanium Strap Rubber strap with Rubber Tech inlay Type: Rubber Color: Black 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 Decor Sand-blasted and trued-up main plate and bridges Technical Details Number of pieces: 178 Number of rubis: 32 Diameter: 16 3/4 Thickness: 5.95 mm Frequency: 28800 Frequency (vph)