Worn by Louis Cartier himself, the “Tank Louis Cartier” watch sets the standard for all Tank watches. To embody Louis Cartier's contribution to “modern style”, later known as Art Deco, the tops of the lugs were rounded in contrast to the previously fashionable rectangular form and proud lines.

Movement	Winding
Mechanical	Automatic Winding
Material	Calibre
Silver-grained dial with blued-steel sword-shaped hands	Manufactured by Cartier
Dimensions	Water Resistance
Diameter: 33.7 mm Thickness: 6.35 mm	Water-resistant to 20 meters/60 feet.