This hand made watchhas been hand fabricated from surgical grade 316L stainless steel, with sapphire glass on both front and back (1.8mm top; 0.9mm underneath) crystals, ETA 2824-2 automatic Swiss movement, and a black calf leather strap. It is water proof at 50m. Individually numbered with a warranty of two years on parts and labour on any fabrication/regular use defects.