Discover the Cartier Ballon Bleu 40 mm (Ref. WSBB0039) — a refined timepiece that blends iconic design with modern mechanical craftsmanship. Housed in a polished stainless steel case approximately 40 mm in diameter and 12.4 mm thick, this automatic watch features Cartier’s in-house calibre 1847 MC movement with a power reserve (~42 hours). The silver-guilloché dial is accentuated with blued-steel sword-shaped hands, Roman numeral hour markers and a date window at 3 o’clock. A distinctive fluted crown set with a synthetic blue cabochon spinel completes the elegant silhouette. With 30 m water resistance, this timepiece transitions seamlessly from boardroom to evening out.

Key Features

• Reference: WSBB0039 — part of the Ballon Bleu de Cartier collection.
  

• Case: Stainless steel, approx 40 mm diameter, thickness ~12.4 mm. 

• Dial: Silvered guilloché with blued-steel sword hands and Roman numerals.

• Movement: Automatic calibre 1847 MC, approx 42-hour power reserve. 

• Crystal: Scratch-resistant sapphire. 

• Strap/Bracelet: Typically black alligator leather strap with deployant buckle (depending on variant) or steel bracelet variant. Water Resistance: 30 m / 3 ATM — suitable for everyday wear (not for diving). 

• Signature Feature: The “balloon”-like rounded case and cabochon crown — hallmark of the Ballon Bleu line.