BWC SWISS winding parameters


  • «CW» - Clockwise winding direction;
  • «CCW» - Counterclockwise winding direction;
  • «Both» - Combined mode (Clockwise + Counterclockwise);
  • «» - Undefined;

Automatik Chronograph: 20008, 20012, 20023, 20769, 20771Valjoux 7750CW800
Automatik Chronograph Galilei: 20026Valjoux 7750 or 7751CW800
Automatik Zeitschreiber: 20029Valjoux 7750 or 7751CW800
Automatik "Classico": 21062ETA 2824-2Both650
Black Performance AutomaticETA 2824-2Both650
Black Performance IIValjoux 7750CW800
Chronograph C-Type: 20011Valjoux 7750CW800
Classic Automatic: 20015ETA 2892-A2Both650
Classic Performance, Classic Performance IIValjoux 7750CW800
Classic Performance AutomaticETA 2834-2Both650
Elegante Automatic: 20004ETA 2824-2Both650
Open Heart Automatic: 20764ETA 2824-2Both650
Pilot Automatic Chronograph: 20050Valjoux 7750CW800
Power PerformanceValjoux 7750CW800
Power Performance AutomaticETA 2824-2Both650
Retro BonnieETA 2671Both650
Retro ClydeETA 2824-2Both650
Skeleton Automatic: 20768ETA 2824-2Both650
Square Automatic: 20043ETA 2824-2Both650
Square Chronograph: 20044Valjoux 7750CW800
Tee Diver Automatic: 21069ETA 2824-2Both650
Tonneau Automatic: 20738ETA 2824-2Both650
XXL Pilot Chronograph 47mm: 20002, 20011, 20030Valjoux 7750CW800
XXL Pilot Watch: 20013, 20014ETA 2824Both650
Swiss 20044 SquareBoth650
Swiss 20044 Square ChronoCW800

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.