RGM winding parameters


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

Alarm: 110AModified AS 5008CW800
Chronograph: 109EModifiedValjoux 7750CW800
Chronograph: 400RGM / ETA ValgrangesCW800
Classic Automatic: 151E, 151EBRGM / ETA 2892-A2Both650
Classic Automatic Copper FaceModified ETA 2892-A2Both650
Classic Aviator: 250RGM / ETA ValgrangesCW800
Classic GMT Big Date Guilloche Automatic: 350ERGM ModifiedBoth650
Classic Grande Guilloche Automatic: 250ERGM / ETA ValgrangesCW800
Coin Impression USS Constellation Ltd. Ed.: 170Modified ETA 2892-A2Both650
HMS Victory Ltd Ed: 200RGM / ETA ValgrangesCW800
Lancaster Chronograph: 155ModifiedValjoux 7750CW800
Left-Handed Calendar Chronograph w/Moonphase: 160 / 180RGM / Valjoux 7751CW800
Moonphase Chronograph: 111MModifiedValjoux 7751CW800
Moonphase Chronograph Full Calendar: 160ModifiedValjoux 7751CW800
Pilot's Chronograph: 109ModifiedValjoux 7750CW800
Pilot's Automatic: 107, 107bpModified ETA 2892-A2Both650
Pilot's Military Automatic: 107mModified ETA 2892-A2Both650
Professional Automatic Pilots: 151RGM / ETA 2892-A2Both650
Professional Automatic Pilots: 151PRGM / ETA 2892-A2Both650
Professional Diver LE: 300RGM / ETA 2892-A2Both650
Professional North Pointer GMT: 254RGM / ETA 2893Both650

If you could not find your watch model (or caliber) in this table, you may determine your RGM 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.