Definitions:
| MODEL, DESCRIPTION | MOVEMENT / CALIBER | WINDING DIRECTION | TURNS PER DAY (TPD) |
|---|---|---|---|
| Classic Automatic: 21.005 | ETA 2824-2 | Both | 650 |
| Classic Automatic Chronograph: 21.006 | Valjoux 7750 | CW | 800 |
| Travelmaster: 2.1012 | ETA 2892 | Both | 650 |
| Willy Blue Automatic | Both | 650 |
If you could not find your watch model (or caliber) in this table, you may determine your BOGNER TIME 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
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