Ronde Must de Cartier watch, 36 mm, high autonomy quartz movement (approx. 8 years). Steel case, beaded crown set with a synthetic cabochon-shaped spinel, sandblasted silvered dial, blued-steel sword-shaped hands, sapphire crystal, black strap (made without animal materials), steel ardillon buckle. Thickness:  7.89 mm. Water-resistant to 3 bar (approx. 30 meters/100 feet).