Tank Must Extra Large Automatic WSTA0040

Description of the Cartier watch

The Cartier Tank Must Extra Large Automatic (WSTA0040) is a modern interpretation of the iconic Tank silhouette  featuring a stainless‑steel rectangular case and a classic silvered dial with Roman numerals and blued‑steel sword‑shaped hands. Its sizeable 41 mm × 31 mm case gives a bold wrist presence while maintaining the elegant geometry Cartier is known for. A supple black leather strap adds understated versatility, making the watch suitable for both formal and everyday wear. 

What makes this Cartier watch exceptional?

The Tank Must Extra Large balances heritage and modernity. Its stainless‑steel case, flinqué silver dial, and cabochon‑set crown echo vintage Tank character yet the automatic mechanical movement (Calibre 1847 MC) brings contemporary reliability and ease. The watch’s proportions, slim 8.4 mm thickness, and date aperture at 6 o’clock provide refined practicality alongside striking aesthetics.

Design & Craftsmanship

• Case & Crown: Rectangular stainless‑steel case with clean lines; beaded crown set with synthetic cabochon‑shaped spinel a hallmark Cartier detail. 

• Dial: Silvered flinqué finish, black Roman numerals, blued‑steel sword hands, and a discreet date window at 6 o’clock blending readability with classic elegance. 

• Strap / Bracelet: Interchangeable black grained calfskin leather strap with deployant buckle adds comfort, flexibility, and a polished finish to the design. 

Features & Complications

• Displays hours, minutes, seconds, and date a clean yet functional layout suitable for daily wear. 

• Automatic mechanical movement self‑winding for reliable timekeeping without need for regular battery changes. 

• Water resistance up to ~3 bar (≈ 30 m) sufficient for everyday use such as hand‑washing or rain, though not meant for swimming or diving. 

• Sleek, slim profile and classic rectangular design ideal for wrists seeking a bold yet refined statement piece.

Specifications

Case

• Material: Stainless steel

• Dimensions: 41.0 mm × 31.0 mm

• Thickness: ~8.4 mm 

• Crown: Beaded, steel with cabochon‑shaped spinel

• Water Resistance: ~3 bar / ~30 m 

Dial

• Finish: Silvered flinqué

• Markers: Black Roman numerals

• Hands: Blued‑steel sword-shaped

• Date: Window at 6 o’clock

Strap / Bracelet

• Material: Black grained calfskin leather (interchangeable)

• Clasp: Steel deployant buckle

Movement

• Caliber: Cartier 1847 MC

• Type: Self‑winding automatic mechanical

• Functions: Hours, minutes, seconds, date

• Power Reserve: ~42 hours