Quick answer
A replica Ballon Bleu 40mm is a copy of the Cartier Ballon Bleu de Cartier in the 40mm case size. Copies sell from about $90 to $700. Price tracks three parts: the movement, the crystal, and the case finish. A 40mm copy with a Miyota 9015 or a clone ETA 2892-A2 and a domed sapphire crystal sits at the top of that range. Quartz copies with mineral glass sit at the bottom.
What the 40mm size means
Cartier sells the Ballon Bleu in 28mm, 33mm, 36mm, 40mm, 42mm, and 46mm cases. The 40mm is a mid-size case. It measures 40mm across the bezel, crown left out. It fits wrists from about 6.5 inches to 7.5 inches. The genuine 40mm runs an automatic movement with a center seconds hand and a date window at 3 o'clock.
Case and crystal
The case is round with a domed profile. The sapphire crystal bulges past the bezel. Copies use three crystal types: mineral glass, flat sapphire, and domed sapphire. Only domed sapphire matches the genuine curve. Test the crystal edge with a fingernail. Sapphire feels hard and slick. Mineral glass scratches with a steel blade.
Crown and cabochon
The crown is fluted and set with a blue cabochon. Cartier uses a synthetic spinel. Cheap copies use glass or dyed plastic. Look at the cabochon under a light. Spinel shows a deep blue with a faint inner glow. Plastic looks flat. The crown guard should sit flush with the case flank. A gap over 0.5mm is a tell.
Movements
The movement sets the price. Common options:
- Quartz: no sweep, lowest cost.
- DG2813 or Miyota 8215: 21,600 vph, 3 Hz, about 6 beats per second.
- Miyota 9015 or Seagull ST2130: 28,800 vph, 4 Hz, 8 beats per second.
- Clone or Swiss ETA 2892-A2 or Sellita SW300: 28,800 vph, about 42 hours of power reserve.
The genuine 40mm uses a Cartier-signed automatic in the 049 family, which comes from the ETA 2892-A2. A 4 Hz sweep matches the genuine rate. Ask the seller for the movement name and a photo of the caseback engraving.
Dial checks
The dial has Roman numerals and blued steel sword hands. Print quality matters more than any other dial detail. Look at the XII numeral. Thick blobs and uneven strokes are common on low tier copies. The date font should match the numerals. Cartier hides its signature inside a Roman numeral on some dials, so check the VII and X numerals with a loupe.
Bracelet and weight
The steel bracelet uses a folding clasp with a Cartier stamp on the blade. Weight is one check buyers use. A genuine 40mm on a full steel bracelet feels heavy in the hand. Many copies use thinner links, so the bracelet weighs less and rattles when shaken. Check the gap between links and the polish on the clasp edges.
Price tiers
- $90 to $180: quartz or DG2813, mineral glass, plated finish.
- $180 to $350: Miyota 8215 or 9015, sapphire crystal, solid 316L steel.
- $350 to $700: clone ETA or Swiss movement, domed sapphire, closer dial print.
Legal facts for US buyers
Replica watches are counterfeit goods. Import into the United States is illegal under 19 U.S.C. 1526. CBP can seize shipments and destroy them. Civil penalties can apply to the buyer. Cartier holds trademarks on the name, the dial design, and the crown shape. Resale of a counterfeit watch is a separate offense.
Questions for a seller
- Which movement is inside, and what beat rate does it run?
- Is the crystal domed sapphire or mineral glass?
- Is the case 316L or 904L steel?
- What is the measured case diameter with calipers?
- Is the cabochon synthetic spinel or glass?
- What is the return policy and the shipping carrier?
No replica matches a genuine Ballon Bleu in every detail. Caseback engraving, movement finishing, and dial print are the three places copies show gaps first.