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CHUMA winding parameters
Definitions:
- «CW» - Clockwise winding direction;
- «CCW» - Counterclockwise winding direction;
- «Both» - Combined mode (Clockwise + Counterclockwise);
- «–» - Undefined;
| MODEL, DESCRIPTION | MOVEMENT / CALIBER | WINDING DIRECTION | TURNS PER DAY (TPD) |
|---|---|---|---|
| Linie I - Chronograph Stahl | Valjoux 7750 | CW | 800 |
| Linie I - Damenuhr Stahl | ETA 2824-2 | Both | 650 |
| Linie I - GMT Stahl | ETA 2892-A2 | Both | 650 |
| Linie I - Herrenuhr Stahl | ETA 2824-2 | Both | 650 |
| Serie I | Valjoux 7750 | CW | 800 |
| Serie II - D60-1 | ETA 2824-2 | Both | 650 |
| Unikate - Modell Avantgarde Gold | Valjoux 7750 | CW | 800 |
| Unikate - Modell Saphir Safire | Valjoux 7750 | CW | 800 |
If you could not find your watch model (or caliber) in this table, you may determine your CHUMA winding mode on a trial basis. You should select the combined winding mode (CW+CCW) and the minimal number of turns per day (TPD). Then place your watch into the winder and check after a few days how accurate your watch shows the time. If it runs behind, it is necessary to increase the number of TPD by one step.
