Cartier Tank Solo watch, small model, quartz movement. Steel case, beaded crown set with a synthetic cabochon-shaped spinel, silvered light opaline dial, Roman numerals, blued-steel sword-shaped hands , sapphire crystal, black grained calfskin interchangeable strap, steel double adjustable folding buckle. Case dimensions: 31 mm x 24.4 mm, thickness: 5.55 mm. Water-resistant to 3 bar (approx. 30 meters/100 feet).