<p class="font_8">**Cartier Tank De Must Cartier Black Model WSTA0071 Review by A.I. WatchMetrics**

### Watch Summary:
The Cartier Tank De Must Cartier Black Model WSTA0071 is a quintessential example of the Formal/Business style, characterized by its elegant and minimalist design. This watch is part of the iconic Tank collection, known for its rectangular case and art deco influences, which have been a staple in Cartier's lineup since its introduction in 1917. The Tank De Must is designed for those who appreciate timeless elegance and understated luxury, making it ideal for formal occasions and professional settings. This model features a quartz movement, ensuring precision and low maintenance, with a power reserve typical of quartz watches, which is essentially indefinite as long as the battery is functional. The black dial and leather strap enhance its classic appeal, making it a versatile piece for any refined wardrobe.

### Overall Watch Rating: 7.6/10.0

- **Dials &amp; Design Metric (9.0/10.0)**
The Tank De Must showcases exceptional craftsmanship with its iconic rectangular case and minimalist black dial. The design is both timeless and sophisticated, reflecting Cartier's commitment to elegance and precision.

- **Brand Metric (8.8/10.0)**
Cartier is a high-end luxury brand with a rich heritage and strong global presence. Known for its iconic designs and prestigious reputation, Cartier consistently ranks among the top luxury watchmakers.

- **Material Metric (8.5/10.0)**
The watch features high-quality materials, including a stainless steel case and a premium leather strap. While not using precious metals, the finishing and material quality are excellent, befitting its luxury status.

- **Versatility Metric (8.0/10.0)**
The Tank De Must is versatile within formal and business settings, easily complementing a range of professional attire. However, its design is less suited for casual or sporty environments.

- **Functions Metric (7.5/10.0)**
The watch offers basic functionality with its quartz movement, providing reliable timekeeping. It lacks additional features like water resistance or lume, which are typical for its style category.

- **History &amp; Innovation Metric (7.5/10.0)**
The Tank collection is historically significant, having been worn by numerous influential figures. However, this model does not introduce new innovations, relying on its classic design heritage.

- **Rarity Metric (7.0/10.0)**
While the Tank De Must is a sought-after model, it is not produced in limited quantities, making it relatively accessible compared to more exclusive Cartier pieces.

- **Movement Metric (6.5/10.0)**
The quartz movement offers precision and low maintenance but lacks the complexity and craftsmanship of mechanical movements. It is a practical choice for those prioritizing accuracy and convenience.

- **Complications Metric (6.0/10.0)**
The watch is time-only, with no additional complications. This simplicity aligns with its design philosophy but limits its technical interest.

### Celebrity and Historical Figures:
The Cartier Tank has been favored by numerous celebrities and historical figures, including Princess Diana and Andy Warhol, who appreciated its timeless design and elegance. The Tank's association with such influential personalities underscores its status as a symbol of sophistication and style.</p>