What is Calibre 333116?

Calibre 333116 is not a movement made by any Swiss watch company. No Swiss maker lists this number. ETA uses 28xx numbers. Sellita uses SW200 and SW300. Rolex uses 31xx and 32xx. The number 333116 appears in listings for replica watches. It is a label. It is not a documented calibre.

Some sellers put 333116 on a rotor or a bridge. The goal is to suggest a high-end Swiss movement. The number does not match any known Swiss or Chinese movement. It may be a factory code. It may be a random number.

The Movement Inside

A watch labeled Calibre 333116 often contains a Chinese automatic movement. Common Chinese movements include the Hangzhou 6460, Seagull ST2130, and Shanghai 2824. These are clones of ETA designs. A genuine ETA 2824 has 25 jewels, 28,800 vibrations per hour, and a power reserve of 38 hours. A clone may have the same specs. The 333116 number does not match any of these clones. It is an extra label.

Some low-grade Chinese movements have 21 jewels. They run at 21,600 vph. They have a power reserve of 36 hours. The finish is rough. The rotor may be noisy. The timekeeping may be poor.

How to Identify a Fake Calibre 333116

Follow these steps. You need a case back tool and a loupe.

  1. Remove the case back. Look at the movement.
  2. Check the engravings. Look for 'ETA', 'Sellita', or 'Swiss Made'.
  3. Find the number 333116. If you see it, treat the movement as unknown.
  4. Look at the balance wheel. A genuine Swiss movement has a smooth balance. A clone may have a rough finish.
  5. Count the jewels. A 25-jewel movement is common. A 21-jewel movement is lower grade.
  6. Compare photos. Use official sites for ETA, Sellita, or Rolex. Do not use seller photos.

What to Check Before Buying

Ask the seller for a photo of the movement. Ask for the calibre number. If the seller says '333116', ask for the base movement. A real seller will name ETA, Sellita, or a Chinese maker. A fake seller will not.

Check watch forums. Some buyers have posted about Calibre 333116. They report that the movement is a low-grade Chinese automatic. It may not keep time. It may stop.

No public database lists Calibre 333116. Treat it as a warning sign.