The short answer
"33671" is not a Cartier reference number. Cartier publishes Ballon Bleu references in the W69012Z4 style, and 33671 is a listing code that replica sellers use to group a 42 mm steel Ballon Bleu with a fluted crown, a blue cabochon and a guilloché dial. Judge a watch sold under that code on four points: case geometry, crown assembly, dial print and movement. Everything else is secondary.
fake cartier ballon bleu 33671
What the 33671 code covers
Most listings tagged 33671 point to the large steel Ballon Bleu: 42 mm case, 13 mm thick, sapphire crystal, Roman numerals, blued steel sword hands and a crown set with a synthetic blue stone. Sellers reuse the number across factories, so two watches with the same code can differ in grade. Ask for the factory name, the movement type and current photos with a timestamp before you compare anything.
fake cartier ballon bleu 33671 comparison
Before you start
- Know the genuine spec sheet: 42 mm diameter, 13 mm thickness, 30 m water resistance, automatic caliber with about 40 hours of reserve.
- Request photos of the caseback, crown from three angles, dial macro and a wrist shot under daylight.
- Confirm the return window and whether the seller accepts a return for movement faults.
- Set a budget range first, since price tiers map to movement grade more than to cosmetics.
How to check the watch step by step
- Measure the case. A caliper should read 41.8 to 42.2 mm across the bezel and 12.8 to 13.4 mm thick. A 40 mm case sold as 42 mm is a lower tier build.
- Inspect the curved flank. The Ballon Bleu case swells outward around the crown, and the transition should be smooth with no flat spot or tool chatter.
- Examine the crown guard. The crown sits inside a recessed channel, and the fluting should be cut, not stamped, with even grooves.
- Check the cabochon. Look for a domed blue stone with a clean polished surface and no glue ring. A flat or cloudy stone signals a budget assembly.
- Read the dial under a loupe. Roman numerals should be crisp and raised, the guilloché rings should be concentric, and the hidden "Cartier" inside the VII should be legible.
- Test the hands. Blued steel sword hands should be flat and evenly colored, with no purple tint or burrs at the tips.
- Verify the crystal. Sapphire should show a sharp edge at the bezel and a faint blue AR tint at an angle. Mineral glass scratches with a steel pin.
- Open or ask about the movement. Automatic builds should beat at 28,800 vph, hack when the crown is pulled, and hold 38 to 42 hours. A quartz tick is a red flag at this price tier.
- Weigh the watch. A steel 42 mm Ballon Bleu on a bracelet runs roughly 130 to 150 g. A sub-110 g weight points to a hollow case or plated alloy.
- Check the engraving. Caseback text should be laser-cut with consistent depth, correct reference format and a serial that matches the paperwork the seller provides.
- Confirm the strap or bracelet fit. End links should sit flush against the lugs with no gap, and the folding clasp should snap without rattle.
Red flags
- Stock photos only, no timestamp and no macro shots.
- A price far below the factory's usual tier for an automatic build.
- No stated movement, or a vague "imported Swiss movement" claim.
- Seller who markets the watch as genuine or offers fake box and papers as a bundle.
- Refusal to accept returns on defects.
Legal note
Replica watches are sold as replicas in most markets and must never be presented as genuine. Selling a counterfeit watch as an authentic Cartier is trademark infringement and consumer fraud in the United States. Keep the receipt, keep the listing language clear, and treat the watch as a lookalike, not an investment.