What TPD setting for your automatic watch? The guide by brand
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For a watch winder to keep your watch on time without unnecessarily stressing it, it must be set according to its caliber. Two settings are enough: the TPD (number of rotations per day) and the direction of rotation.
What is TPD?
TPD (turns per day) indicates how many full turns the watch must make in 24 hours to maintain its power reserve. Too few, and it will eventually stop. Too many, and the winder turns unnecessarily. The vast majority of automatic watches fall between 650 and 950 TPD.
Direction of rotation
Depending on the caliber, the rotor winds the spring clockwise, counterclockwise, or in both directions. If in doubt, the bidirectional mode is suitable for most watches.
Indicative values by brand
| Brand | Indicative TPD | Direction |
|---|---|---|
| Rolex | 650 | Bidirectional |
| Tudor | 650 | Bidirectional |
| Omega | 800 | Bidirectional |
| Breitling | 650 | Bidirectional |
| Cartier | 800 | Bidirectional |
| TAG Heuer | 800 | Bidirectional |
| Seiko | 650 | Bidirectional |
These values are indicative and apply to the majority of calibers from each house. Some movements are exceptions: always refer to your watch's manual or the brand's website. Brand names are mentioned for informational purposes; Harlow & Sons is not affiliated with any of them.
How to find the exact setting?
- Locate the caliber reference in the manual or on the back of the watch.
- Consult the brand's documentation or a caliber database.
- Set your winder, then check after a few days that the watch remains on time.
All our watch winders allow you to set the TPD and the direction of rotation. You can also find our detailed settings guide.