Short answer
The string 6654-1127-b97a is not a reference number from Rolex, Omega, Seiko, Cartier, or Tudor. It is a seller catalog code. In listings built this way, 6654 is the model slot, 1127 is the variant slot, and b97a is a batch or listing hash. The code carries no information about case size, movement caliber, crystal, or steel grade. Before you pay, ask the seller for the base model reference and the movement name.
What each part of the code does
- 6654: model slot. Points to the shape of the watch in that seller's catalog, not to a manufacturer reference.
- 1127: variant slot. Covers dial color, bracelet type, or bezel finish inside that catalog.
- b97a: batch or listing hash. Changes when the seller restocks or edits the photos.
Two sellers can list the same physical watch under two different codes. One seller can reuse 6654-1127-b97a for a new batch with a different movement. The code is a shelf label, not a spec sheet.
What the code does not tell you
- Case diameter in millimeters
- Movement brand and caliber
- Crystal material: mineral, sapphire, or sapphire with anti-reflective coating
- Case and bracelet steel: 316L or 904L
- Water resistance, claimed or tested
- Weight in grams
- Lume compound and lume duration
Questions to send the seller
- What base model reference does this watch copy?
- What movement is inside, and what is the beat rate in vibrations per hour?
- What is the case diameter and lug width in millimeters?
- Is the crystal sapphire or mineral?
- Is the caseback solid or display?
- What is the actual weight in grams?
- Can you send photos of the exact unit I will receive, with the date visible in frame?
Sellers who answer all seven in one message run a real operation. Sellers who reply with a stock slogan and no numbers do not.
Movement tiers
Three tiers cover most of the US replica market.
- Entry, about $80 to $200: a DG2813 or a similar Chinese automatic, 21,600 vph.
- Mid, about $250 to $500: a Seagull ST2130 or a copy of the ETA 2824-2 pattern, 28,800 vph.
- Top, about $500 to $1,000 and above: a Swiss ETA or Sellita SW200 base, sapphire crystal, 904L case option, tighter bracelet fitting.
Price is a weak signal on its own. A $600 listing with a $60 movement has happened. Ask for the movement name before the tier claims matter.
Water resistance
ISO 22810 sets the test method and the marking for water-resistant watches. ISO 6425 covers diver's watches. Most replica listings print a depth number with no test behind it. A gasket that was not seated at assembly leaks at 30 meters. If you plan to swim, have the case pressure-tested at a local watch shop first. That test costs about $20 to $40 in the US.
Legal position in the US
18 U.S.C. § 2320 makes trafficking in counterfeit goods a federal crime. Customs and Border Protection has authority to seize counterfeit goods at US ports, and seized shipments can be destroyed. Brand names and logos such as Rolex and Omega hold registered trademarks with the USPTO. Buying a replica for personal use is not the charge in most cases. Importing, shipping, and reselling are where the exposure sits, and a seized parcel means the money is gone.
Checklist before you pay
- Base reference and movement caliber in writing.
- Case diameter, thickness, and lug width in millimeters.
- Crystal type and caseback type.
- Photos of the actual unit, not catalog shots.
- Payment method with a chargeback path.
- Return terms stated before shipment.
Run that list and the SKU stops mattering. The specs and the seller record decide the outcome.