Cartier Tank Must watch authentic

Tank Must watch, small model, high autonomy quartz movement. Steel case, beaded crown set with a synthetic cabochon-shaped spinel, silvered dial, blued-steel sword-shaped hands, interchangeable black grained calfskin strap, steel ardillon buckle. Case dimensions: 29.5 mm x 22 mm, thickness: 6.6 mm. Water-resistant up to 3 bar (approx. 30 meters/100 feet) Comes with original box paper and authentication card