Sellita Grades

Sellita Grades

Sellita Grades

Did you know there are 4 Grades of Sellita Movements?

Just like some ETA movements, Sellita calibers are also available in different grades: Standard, Special, Premium, Chronometer.

Accuracy Between Grades:

These ratings may vary between specific caliber numbers, but here are the specs for the popular SW200-1 and SW215-1 which many Sellita movements are based on.

  • Standard – adjusted in two positions; accuracy of +/-12 sec/day up to +/- 30 sec/day
  • Special (Elabore) – adjusted in three positions; accuracy of +/-7 sec/day up to +/- 20 sec/day
  • Premium (Top) – adjusted in five positions; accuracy of +/-4 sec/day up to +/- 15 sec/day
  • Chronometer – COSC criteria (learn more)

How to tell the difference between grades?

One way to distinguish between Standard/Special and Premium/COSC grades of Sellita is to look at the anti-shock device:


Other Differences:

The pallets on the Standard/Special grade are polyrubies. On Premium and COSC grades the pallets are red rubies.

Similarities Between Grades:

Despite differences in accuracy and some parts, all grades share some common features.

  • The escape wheel is polished, epilame-coated, and uses molybdenum disulfide (MoS2).
  • The pallet forks are polished.
  • The balance wheel is gilt.
  • The hairspring collet is Nivatronic.
  • The balance staff is epilame-coated.


In addition to different grades, there are also different finishes: Standard, Refined, and Tailor Made. The images below are a side-by-side comparison between the Standard and Refined finishes.

Additional Resources:

  • List of Sellita calibers here
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10 months ago

I have almost a dozen watches with Sellita movements and have been using them for years. This is the first I’ve learned about the different grade options. Truly informative, thank you.

Norqain Caliber NN08 Watch Movement | Caliber Corner
1 month ago

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