The Sellita SW200-1 winds in both directions, at a rate of 650 to 800 turns per day.
| Rotation direction | Bidirectional |
| Turns per day | 650 to 800 |
| Power reserve | 38 to 41 hours depending on generation |
| SW300-1 | Bidirectional · 650 to 800 TPD |
| SW500 | Clockwise only · 650 to 800 TPD |
The de facto successor to the ETA 2824
When the Swatch Group gradually restricted the sale of ETA movements to outside brands, Sellita, which had been assembling those same movements for decades, launched its own calibres. The SW200-1 is architecturally very close to the ETA 2824-2 and interchangeable with it on most points.
Today it powers a considerable share of independent Swiss watchmaking and micro-brands: Oris, Tudor on some references, Christopher Ward, Baltic, Yema, and many others.
Watch out for the SW500
This is the point to watch in the Sellita range. The SW500, equivalent to the Valjoux 7750, is a chronograph with clockwise-only winding.
If your watch is a chronograph, do not use the SW200 setting: see our dedicated page for the 7750 and SW500.
The thinner SW300-1, equivalent to the ETA 2892, is bidirectional like the SW200.
How to tell which one you have
The ETA / Sellita distinction is often invisible to the owner, and most brands do not state it explicitly. It makes no difference to the setting: both are treated the same way.
What matters is distinguishing a three-hand movement from a chronograph. The first is bidirectional, the second clockwise only.
Thirty-eight hours of reserve
Like the 2824-2, the SW200-1 has a short reserve. Recent generations reach forty-one hours, still less than a full weekend.
This is typically the calibre where a winder changes daily life: without one, the watch will have stopped every time you have not worn it for two days.
Frequently asked questions
How many turns per day for a Sellita SW200-1?
Between 650 and 800 TPD, in both directions.
Is the SW200-1 set like the ETA 2824-2?
Yes. Same architecture, same setting: bidirectional, 650 to 800 TPD.
What about the Sellita SW500?
It is a chronograph with clockwise-only winding, like the Valjoux 7750. Do not use the SW200 setting.
Why does my SW200 watch stop at the weekend?
Its 38 to 41-hour reserve does not cover two days without wear. A winder keeps it running.
Which watch winder to choose
For a single watch, our single watch winders are suitable, set to bidirectional. If you combine an SW200 and an SW500 chronograph, choose a model with independently adjustable rotors such as the Pégase Watch Winder.
Other calibres
See our Settings by calibre page, or our watch winders with adjustable programmes.
A question? contact@maisonorvian.com