The 316L Stainless Steel case is entirely CNC-machined in Biel/Bienne Switzerland. The Swiss-made, self-winding movement is manufactured by Swiss Technology Production (STP) and tested in 5 positions at our assembly center in Lugano, Switzerland for the highest accuracy and reliability. The double-domed sapphire crystal is treated with 14 layers of anti-reflective coating for the most glare-resistant and ultra-clear look of the dial. Each brass dial is also coated with multiple layers of transparent lacquer for added glossiness and elegance. The hand-applied Arabic numerals and indices are plated in Rhodium for a brilliant shine and reflectiveness.