The top pick for most buyers is the automatic Ballon Bleu 33708 built around a decorated clone of the ETA 2824 (or a movement sold as Swiss 2892), in a 316L stainless case with a domed sapphire crystal, bought from a wholesaler who sends QC photos before the parcel ships. It wins because the case dome, the blue cabochon crown and the textured dial are the three places where cheaper builds reveal themselves. Every version below was weighed on the same four points: case profile, dial and hand finish, movement, and how much control you get before delivery.

What the 33708 tag covers

The number 33708 appears on the caseback of self-winding Ballon Bleu de Cartier watches, and sellers use it as a listing tag for that family. Two listings carrying the same tag can be very different watches: one may be a quartz-driven copy in a light case, another a full automatic with decorated bridges. Before you compare anything else, ask which case size and which movement the unit carries, because the tag alone does not settle it. Expect these shared features on any version worth buying:

• A rounded, pebble-shaped case with the crown set into a guarded shoulder
• A blue synthetic spinel cabochon on the crown
• Roman numerals over a flinqué guilloché dial texture
• Sword-shaped hands with a polished, blued or steel finish
• A date window at 3 o'clock on most automatic versions

Tier 1: quartz and budget automatic builds

These are the listings that make up most of the low end of the 33708 market. The quartz units keep time and cost little, which makes them useful for checking whether the case size suits your wrist. The budget automatics in this tier often use an unbranded 21,600 bph movement, so the sweep is choppier and the case is a hair thicker than the original.

Pros

• Lowest entry point for testing a case size before you commit to a better build
• Light on the wrist, and a dead quartz movement is cheap to swap
• Plenty of stock, so sizing and dial color are easy to find

Cons

• Quartz seconds hand ticks, which is the fastest tell on a Ballon Bleu
• Guilloché texture is usually printed rather than cut, and it flattens under light
• Cabochon looks like molded plastic, and the cabochon is the focal point of the design
• Bracelet end links and clasp feel loose, with soft screws

Best for: sizing checks, costume use, and buyers who want the silhouette without spending on a movement.

Tier 2: Miyota 9015 and ST2130 automatic builds

This is the value tier and the one most first-time buyers should target. Both movements run at 28,800 bph, so the seconds hand sweeps the way the original automatic does, and both are serviceable by a competent watchmaker in the US. Case finishing in this tier is a clear step up: sharper lug bevels, a crown that sits flush in its guard, and sapphire crystal on the better examples.

Pros

• Correct 28,800 bph sweep and a movement that can be regulated
• Domed crystal with an anti-reflective coating that does not wash the dial out
• Dial stamping with real depth, so the Roman numerals sit above the texture
• Parts availability for future service or a swap

Cons

• Rotor noise is audible on the Miyota in a quiet room
• Bridge decoration does not match the layout published for the original movement
• Case height can run slightly tall, which changes how the watch sits under a cuff

Best for: daily wear, a first automatic Ballon Bleu, and resellers who need a reliable repeatable unit.

Tier 3: Swiss-labeled ETA and clone 2824 builds

The top tier targets the buyer who wants the closest case and dial match. Finishing on the mid-case and lugs is tighter, the crown cabochon is set with more care, and the bracelet links are cut with better tolerances. The catch is labeling: many sellers describe a movement as Swiss when it is an Asian clone, so ask for the maker name in writing and a photo of the movement before payment.

Pros

• Bridges engraved and decorated in a layout that matches reference photos
• Best case polishing in the 33708 field, with crisp transitions between brushed and polished surfaces
• Smoother winding feel and a quieter rotor than the mid tier
• Bracelet and clasp tolerances that hold up over years of daily use

Cons

• Highest cost in the range, and the gain over tier 2 is visible mostly up close
• Movement origin is often misstated, which makes the seller's claims hard to verify
• Servicing takes longer if the movement is a clone with non-standard parts

Best for: collectors, photo-heavy listings, and buyers who keep a watch instead of flipping it.

Details that separate a good 33708 from a bad one

Run this checklist against the QC photos before you approve a unit. The dial and crown do more work than the movement when the watch is on the wrist.

Approve the unit when

• The case dome curves into the lugs without a flat spot or a visible seam
• The cabochon is a deep, even blue with a rounded dome and no mold line
• Roman numerals are applied or raised, not printed flat on the dial
• The date sits centered in its window at 3 o'clock
• Hands align with the printed minutes track at 12

Reject or renegotiate when

• The crown guard is asymmetric or the crown sits proud of the case
• The guilloché pattern is a decal that shifts under angled light
• Crystal edges catch light in a ring, which points to a mineral glass substitute
• The seller will not send a movement photo or a timegrapher reading

Wholesale ordering compared with single-unit buying

Wholesale channels change the economics and the risk profile of a 33708 purchase. You trade hand-holding for per-unit cost and access to spare parts, which matters if you plan to sell or to keep several sizes.

Pros

• Lower cost per watch once you order more than a single unit
• Spare bracelets, crystals and crowns from the same batch
• Batch QC photos let you compare several units and pick the best one
• Mixed orders, such as two case sizes in the same colorway, are usually accepted

Cons

• Minimum order quantities, which is awkward for a one-watch buyer
• Returns are harder once stock has been split or opened
• Longer transit and less communication than a single-unit seller

Best for: resellers and buyers who want two or three versions at once.

Which 33708 to buy for your use case

• First replica, worn often: tier 2 with a Miyota 9015 or ST2130, sapphire crystal, and QC photos before shipping.
• Long-term keeper: tier 3 with a confirmed 2824-based movement and decorated bridges.
• Sizing test or costume: tier 1 in the case size you are considering, then upgrade.
• Resale stock: wholesale tier 2 across two case sizes, with spare bracelets in the same order.

Whichever tier you choose, settle the movement, the case size and the QC process in writing before money changes hands. Those three details decide the outcome far more than the listing photos do.