Longines HydroConquest L3.641, L3.642, L3.649, L3.655 TPD & Winder Settings | Aevitas
Owners of the Longines HydroConquest L3.641, L3.642, L3.649, L3.655 (L3.641 / L3.642 / L3.649 / L3.655) often ask us which winder programme this movement actually needs. The answer is 650 turns per day on a bidirectional cycle — the figures are set out below.
Recommended Winder Settings
| Setting |
Value |
| Turns per day (TPD) |
650 |
| Winding direction |
bidirectional |
| Movement |
|
Recommended Winder
£239.00
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Why These Settings Matter
Programmed correctly, a winder mimics a day on the wrist. For this movement that means 650 turns spread across the day on a bidirectional cycle, which keeps the HydroConquest L3.641, L3.642, L3.649, L3.655 ready to pick up and wear with the correct time and date showing.
And if the figure is set too high? Modern automatic calibres protect themselves: the mainspring bridle slips inside the barrel once full wind is reached, so surplus turns are simply shed. The watch cannot be overwound or damaged by a winder — a low setting that lets it stop is the only outcome worth avoiding.
Every Aevitas winder can be programmed from 650 to 1,850 TPD in either direction, so matching the 650 TPD this watch needs takes seconds.
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