Reference WSTA0030 brings the Tank Solo's timeless geometry to life in a 31 mm x 24.4 mm steel case measuring just 5.55 mm thick. The beaded crown is set with a synthetic cabochon-shaped spinel, while a sapphire crystal protects the silvered light opaline dial beneath. Blued-steel sword-shaped hands sweep across the Roman numeral chapter ring with quiet elegance.
A black grained calfskin interchangeable strap keeps the look grounded and versatile, secured by a steel double adjustable folding buckle. The watch offers water resistance to 3 bar, approximately 30 meters or 100 feet.
Driven by a quartz movement and sized to wear comfortably on the wrist, this Tank Solo is a considered expression of Cartier's enduring rectangular form — understated in profile, precise in every detail.
