What about watch winding “cycles”?
Answer: Let’s presume your particular watch needs 600 TPD to keep it wound.
Some watchwinders run continuously for several hours and then turn off for the rest of the day (i.e. 100 turns per hour x 6 hours = 600 TPD).
Others run for only a few minutes per hour, but do so all day long (i.e. 25 turns per hour x 24 hours = 600 TPD).
Both methods keep your watch fully
wound but when it comes to watch accuracy, the second method is infinitely better.
Why? Because the mainspring attains its greatest torque when it is fully wound. As it slowly unwinds over the day, torque decreases and this torque reduction impacts the running accuracy of the watch.
So, periodic rewinding all day long translates into more constant torque, a constant running rate and a more accurate watch.
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