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BWC SWISS 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) |
|---|---|---|---|
| Automatik Chronograph: 20008, 20012, 20023, 20769, 20771 | Valjoux 7750 | CW | 800 |
| Automatik Chronograph Galilei: 20026 | Valjoux 7750 or 7751 | CW | 800 |
| Automatik Zeitschreiber: 20029 | Valjoux 7750 or 7751 | CW | 800 |
| Automatik "Classico": 21062 | ETA 2824-2 | Both | 650 |
| Black Performance Automatic | ETA 2824-2 | Both | 650 |
| Black Performance II | Valjoux 7750 | CW | 800 |
| Chronograph C-Type: 20011 | Valjoux 7750 | CW | 800 |
| Classic Automatic: 20015 | ETA 2892-A2 | Both | 650 |
| Classic Performance, Classic Performance II | Valjoux 7750 | CW | 800 |
| Classic Performance Automatic | ETA 2834-2 | Both | 650 |
| Elegante Automatic: 20004 | ETA 2824-2 | Both | 650 |
| Open Heart Automatic: 20764 | ETA 2824-2 | Both | 650 |
| Pilot Automatic Chronograph: 20050 | Valjoux 7750 | CW | 800 |
| Power Performance | Valjoux 7750 | CW | 800 |
| Power Performance Automatic | ETA 2824-2 | Both | 650 |
| Retro Bonnie | ETA 2671 | Both | 650 |
| Retro Clyde | ETA 2824-2 | Both | 650 |
| Skeleton Automatic: 20768 | ETA 2824-2 | Both | 650 |
| Square Automatic: 20043 | ETA 2824-2 | Both | 650 |
| Square Chronograph: 20044 | Valjoux 7750 | CW | 800 |
| Tee Diver Automatic: 21069 | ETA 2824-2 | Both | 650 |
| Tonneau Automatic: 20738 | ETA 2824-2 | Both | 650 |
| XXL Pilot Chronograph 47mm: 20002, 20011, 20030 | Valjoux 7750 | CW | 800 |
| XXL Pilot Watch: 20013, 20014 | ETA 2824 | Both | 650 |
| Swiss 20044 Square | Both | 650 | |
| Swiss 20044 Square Chrono | CW | 800 |
If you could not find your watch model (or caliber) in this table, you may determine your BWC SWISS 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.
