The Cartier 21 Must Chronoscaph (ref. W10125U2) is a sports watch with a 38 mm round case in stainless steel. It has a black dial under sapphire crystal.
It is powered by a quartz movement. Features: Fixed bezel with engraved Roman numerals, crown with black cabochon, cartier logo pattern on the dial, magnifying lens over the date aperture, luminescent hands and markers. Water-resistant to 100 m. The watch is fitted with a steel and rubber combination strap with a folding clasp in steel.
This example is pre-owned and in good condition.