Cartier Tank must SolarBeat

The Cartier Tank must SolarBeat, reference WSTA0091, has a steel case that measures 22 x 29.5 mm. The rectangular case is 6.6 mm thick, and Cartier describes this Tank Must as a small model. The movement is a photovoltaic SolarBeat, and the watch is listed as a solar watch. The watch displays hours and minutes. The dial is silvered, and the sword-shaped hands are blued steel. A beaded crown is set with a synthetic cabochon-shaped spinel. Cartier rates the case to 30 metres, which is 3 bar. A steel bracelet is fitted to the watch.