Cartier Tank Must Watch, Small Model, SolarBeat Photovoltaic Movement, Steel Case WSTA0121

The Cartier Tank Must WSTA0121 is a refined small-model watch that combines the iconic Tank silhouette with Cartier’s innovative SolarBeat photovoltaic movement. Its 22mm stainless steel case features the collection’s distinctive rectangular profile, paired with a matching steel bracelet for a sleek, seamless finish. The silvered dial is framed by classic Roman numeral hour markers and complemented by Cartier’s signature blued-steel hands, preserving the timeless character of the original Tank design. Discreetly powered by light through photovoltaic technology integrated beneath the dial, the SolarBeat movement offers a modern, low-maintenance approach to watchmaking. With water resistance to 30 metres, this elegant timepiece brings together Cartier heritage, contemporary technology and understated sophistication.