Instead of measuring winding time in minutes or hours, watch winders use Turns Per Day (TPD), which refers to how many times the internal rotor needs to rotate to keep your watch running. Most automatic watches require between 600 and 800 turns per day (TPD), and some with longer power reserves may need up to 1300 TPD.
For example, a Rolex President typically needs around 600 TPD, while Patek Philippe chronographs with Valjoux 7750 movements require at least 800 TPD and only wind in a clockwise direction. Some watches can wind in both directions, while others only wind in one. A high-quality watch winder allows you to adjust both TPD and rotation direction to suit your specific watch.
That said, we’ve included options up to 1950 TPD to cover rare cases where a watch might require it — such as certain tourbillons, specialty movements, or heavily modified automatics.