The best pick for a replica Ballon Bleu 33708 is a 36 mm steel automatic built around a Miyota 9015, with a sapphire crystal, a real synthetic spinel cabochon set into the crown, and a dial that shows concentric flinqué rings under raking light. That combination wins because it fixes the three things people notice on a wrist: how the case sits, how the crown catches light, and how the dial reads from a foot away. Everything else, including engraved rotor plates and stamped origin marks, mostly serves listing photos rather than wear. The criteria below are ranked by impact, from the movement outward to the bracelet, then closed out with a checksheet you can run against any seller's answers before money changes hands.
1. Movement: what runs under the caseback
Most replica Ballon Bleu 33708 builds ship with one of three powerplants: a Miyota 9015, a Chinese clone of an ETA 2892 or 2824, or a generic automatic dressed with a copy of the Cartier rotor finish. The Miyota 9015 is a known quantity. It is a 24 jewel automatic that beats at 28,800 vibrations per hour, hacks for time setting, carries a date, and runs roughly two days on a full wind. A watchmaker can regulate it or swap it without hunting for odd parts.
Pros
- Widely serviced, so a slow-running example is a cheap fix rather than a write-off.
- Sweeping seconds look right at 8 beats per second.
- Replacement units are easy to source if one fails.
Cons
- Rotor engraving rarely matches the real calibre, which matters only if you open the case in front of someone.
- Some sellers advertise a Miyota and ship a clone, so ask for a photo of the movement before shipping.
Best for: anyone planning to wear the watch daily, or to hand it to a local watchmaker for timing.
2. Case diameter and thickness
Treat 33708 as a case reference rather than a complete model name, and ask the seller which diameter they are shipping. The Ballon Bleu line spans several sizes, and a 36 mm case with a 12 mm profile behaves nothing like a 42 mm case on a 6.5 inch wrist. Thickness is the number sellers hide. A case that comes in 2 mm thick versus the reference will sit high on the wrist and push the crown into the back of your hand.
Pros
- 36 mm suits small and average wrists and slides under a shirt cuff.
- A caliper check takes ten seconds and settles the argument.
Cons
- Oversized versions photograph well and wear poorly.
- Caseback engraving often lists a reference that does not match the case in hand.
Best for: buyers with wrists under 7 inches, who should default to the smaller case.
3. Dial texture and printing
The flinqué dial is the hardest element to fake well. Real ones are cut with concentric rings that catch light at an angle; cheap ones are stamped flat and look painted. Check the date window edges, the Roman numeral alignment at 12, and whether the sword hands are blued steel or painted blue.
Pros
- Good texture reads as depth rather than a printed pattern.
- Crisp printing around the numerals is the fastest tell at arm's length.
Cons
- Batch to batch variation is real, so one photo does not describe the next shipment.
- Painted hands look correct indoors and flat in daylight.
Best for: buyers who care about the dial more than the caseback, since the dial is the part you actually see.
4. Crown and blue cabochon
The crown on this model is capped with a blue synthetic spinel. Replicas use glass, plastic, or a painted bead. A glass cabochon with an even dome and no bubbles is the acceptable middle ground; a plastic bead goes cloudy and scratches within months.
Pros
- A dome shaped cabochon gives the silhouette its signature bump.
- Fluted crown edges should feel machined, not rough.
Cons
- Glued cabochons can fall out, so ask about the setting method.
- Color shifts toward purple in cheap stones.
Best for: anyone buying the watch for its profile, because the crown is the profile.
5. Bracelet, clasp, and finishing
Ask for a weight and for a photo of the clasp interior. A hollow bracelet rattles and pinches; a solid one with screwed links lets you size it at home. Look for even brushing on the outer links, polished edges that are not wavy, and a clasp that closes with a firm click.
Pros
- Solid links take sizing without deforming.
- Clean finishing hides the seam between case and bracelet.
Cons
- Pin and collar systems are harder to resize than screws.
- Weight claims from sellers are unverified until the package arrives.
Best for: buyers who resize at home and want to keep the original parts.
6. Water resistance and origin claims
Do not swim in any replica unless the seller states that the case was pressure tested and the gaskets were greased. A screw-down caseback and a push-in crown do not equal water resistance. Treat origin stamps the same way: the Swiss made label has a defined legal meaning tied to where the movement is made, cased, and inspected, and a marking on a caseback does not change where the parts came from. Importing counterfeit goods into the United States is prohibited and shipments are subject to seizure, so plan for the risk before you order.
Pros
- Honest sellers will admit a watch is splash resistant at best.
- Knowing the legal position keeps expectations realistic.
Cons
- Vague claims about sealing are common.
- Seizure means no refund from most sellers.
Best for: buyers who treat the watch as a dry-weather piece.
7. Pre-purchase checksheet
- Ask for the case diameter and thickness in millimeters, measured with calipers.
- Request a movement photo with the caseback off.
- Request a dial photo taken in daylight at an angle, not head-on.
- Ask whether the cabochon is glass, spinel, or plastic.
- Ask for the bracelet weight and the clasp type.
- Confirm the return window in writing before payment.
- Inspect the watch on arrival with a loupe and a timegrapher, then decide.
If you want one line to remember: buy the movement and the case first, the dial second, and the paperwork last. A replica Ballon Bleu 33708 with a serviceable automatic and correct proportions will outlast any version that only photographs well.