Short answer
The replica Ballon Bleu extra large is a 42 mm version of the Cartier Ballon Bleu de Cartier. The line runs from 28 mm to 42 mm, so extra large means the biggest case size: a round 42 mm case, a flinqué dial, a crown under a rounded guard with a blue cabochon, and a steel or two-tone finish. On a replica, the diameter is the easy part. The hard parts are proportions, crown shape, dial texture, and how the case sits on your wrist.
What extra large means in this line
Cartier offers the 42 mm Ballon Bleu in steel, steel and rose gold, and gold. The case measures 42 mm across and about 13 mm thick on automatic models. The steel 42 mm is rated to 3 bar (30 m), which covers splashes and rain, not swimming or diving.
Before you compare versions
- Measure your wrist in millimeters with a tape where you wear a watch.
- Write down the lug-to-lug distance so you can compare it with your wrist width.
- Pick the finish you want: steel, steel with a rose gold bezel, or a full gold look.
- Decide between quartz and automatic, and set a budget for each.
Inspection steps
- Measure the case with calipers. The diameter should read 42 mm across the case at 3 and 9 o'clock, not counting the crown.
- Check the crown. It should sit under a rounded guard, and the blue cabochon should be domed and set flush.
- Study the dial. The guilloché pattern should show concentric rings that catch light from different angles.
- Look at the hands. The sword hands should have a clean edge and no rough stamping marks.
- Turn the watch over. The caseback engraving should be crisp, with even depth and correct reference text.
- Set the time and date. The crown should turn without grit, and the date should snap at midnight.
- Work the bracelet. Links should move without play, and the clasp should close with a firm click.
- Test water resistance only if the seller states a rating and the gaskets are new. Otherwise keep the watch away from water.
Wrist fit
A 42 mm round case with a domed crystal reads larger than the numbers suggest. The Ballon Bleu case has short, curved lugs, so it can fit wrists that often need a 40 mm watch. If your wrist measures under 165 mm, try a 36 mm Ballon Bleu before you commit to the extra large size. The 42 mm model suits wrists from about 170 mm and up, and it wears best with a small gap at the lugs.
Movement and finishing checks
Replica extra large models come with quartz or automatic movements. A standard quartz ticks once per second. An automatic sweeps and winds from wrist motion. Ask for a photo of the movement, and check that the rotor spins without scraping. Timing should stay within about 20 seconds per day for a low-cost automatic. If you want tighter numbers, budget for a service.
Water resistance and care
ISO 22810 defines water resistance ratings for watches, and a 3 bar (30 m) rating covers splashes only. Do not swim with a 30 m watch. Wipe the case with a soft cloth after contact with sweat or salt water, and keep the crown pushed in. If the watch fogs, stop wearing it and have the gaskets replaced.
What a high-grade replica can and cannot match
Good replicas match the 42 mm diameter, the cabochon color, and the dial pattern. They do not match the genuine movement, the precious metal content, or the Swiss Made label. The Federation of the Swiss Watch Industry sets the Swiss Made rule, and a replica cannot meet it. Treat the watch as a fashion piece, and judge it on the case, dial, and bracelet finish.