Innovation runs through Cartier's veins. Cartier proves this once again with the new Tank Must watch with a photovoltaic dial and a strap produced without animal materials.
How did we use solar energy without altering the aesthetics of the Tank watch? This technical feat created by the Cartier Manufacture relies on the delicate and invisible perforation of the Roman numerals, whose openings allow solar energy to reach the photovoltaic cells hidden under the dial. It took two years for the team at the Manufacture to integrate this SolarBeatTM movement, with an autonomy of approximately 16 years into the Tank Must, the first watch to benefit from this technology.
This pioneering watch also introduces a strap composed of materials from the circular economy. Using responsible and sustainable production practices, it is composed of around 40% plant matter, produced using waste from apples grown for the food industry in Switzerland, Germany and Italy.

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