The Ronde Solo de Cartier Reference 3802 (also designated by modern part numbers like WSRN0022 or W6701011) is the modern XL 42mm automatic variant within Cartier's classical round dress watch family. Combining traditional Parisian horological codes with a sleek, flat profile, it provides a highly legible and contemporary entry point into Cartier’s self-winding catalog.

• Case Diameter: 42 mm

• Case Thickness: Ultra-slim profile measuring just 9.2 mm

• Case Material: High-grade polished 316L Stainless Steel

• Movement: Automatic, self-winding mechanical caliber (historically powered by the reliable Calibre 049 or Cartier’s newer in-house Calibre 1847 MC)

• Dial Aesthetic: Silvered opaline texturing featuring classic black Roman numeral hour markers, an inner 24-hour military scale track, and a rail-track minute ring. Includes the secret "Cartier" signature hidden within the VII numeral.

• Hands: Blued-steel sword or apple-shaped hands.

• Complications: Clean, contrasting quickset date window at 3 o'clock.

• Crown: Fluted winding crown set with a synthetic blue spinel cabochon.

• Crystal: Scratch-resistant sapphire crystal.

• Water Resistance: Everyday rating of 30 meters (3 bar / 100 feet).

• Strap Options: Traditionally delivered either on an integrated polished stainless steel bracelet or a black alligator leather strap pairing with an adjustable double-fold (deployant) buckle.