Cartier
Tank Must SolarBeat Small
WSTA0060
Solar-powered elegance in the enduring Tank silhouette.
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Overview
The Tank Must SolarBeat Small (ref. WSTA0060) is a 29.5 × 22 mm stainless steel dress watch that unites the Tank line's century-long architectural heritage with Cartier's SolarBeat photovoltaic quartz movement. Its silvered dial features perforated Roman numerals, a detail that allows light to reach the movement's energy-harvesting cells beneath. The result is a refined everyday companion that requires no battery replacement under normal wearing conditions.
History
Cartier introduced the Tank Must SolarBeat collection in 2021, positioning it as a contemporary, sustainability-conscious evolution of the Must de Cartier concept first popularised in the 1970s. The SolarBeat movement, developed in-house, converts ambient light into electrical energy stored in a long-life accumulator, dramatically extending service intervals compared with conventional quartz calibres. The Small size continues the Tank's tradition of offering proportions suited to a wide range of wrists while preserving the strict rectangular geometry that has defined the line since 1917.
Notable points
- The SolarBeat photovoltaic movement harvests both natural and artificial light, reducing the need for routine battery changes.
- Perforated Roman numerals on the silvered dial serve a dual purpose: decorative refinement and light transmission to the solar cells beneath.
- At 29.5 × 22 mm, the case follows the Tank's characteristic elongated rectangle, a proportion unchanged in spirit since Louis Cartier's original 1917 design.
- Stainless steel construction places the reference within an accessible tier of the Tank Must family, echoing the democratic spirit of the original Must de Cartier range.
- Introduced in 2021, the SolarBeat Small represents Cartier's integration of low-environmental-impact technology into its core dress-watch canon.
Specifications
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