Case in stainless steel 316L, Ø40mm with basin-shape profile. Water-resistant to 3 bar. Total thickness of 11mm, crystal included. Box type sapphire crystal with double sided anti-reflective coating. Case back in stainless steel 316L with lugs, stamped logo and transparent sapphire crystal. Dial in natural dumortierite, polished. A beautifully intriguing stone with blue, blue-violet and black shades. High end black calf leather strap, with black leather lining and handmade stitching. Tongue buckle in stainless steel 316L. Swiss mechanical movement (Sellita SW300-1 Premium) with automatic winding, 42 hours of power reserve, 25 jewels, 28’800 vibrations/hour (4Hz), displaying hours, minutes and seconds with hands.