Longines Conquest Automatic L1.641 Chronograph TPD & Winder Settings | Aevitas

Getting the turns-per-day figure right matters with the Longines Conquest Automatic L1.641 Chronograph (L1.641). This one runs best at 650 TPD, rotating in both directions — the full settings are below.

Recommended Winder Settings

Setting	Value
Turns per day (TPD)	650
Winding direction	bidirectional
Movement

Recommended Winder

Single Watch Winder in Ebony Macassar Wood Finish

£239.00

Free UK delivery • 3 year warranty

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Why These Settings Matter

The 650 TPD figure reflects how much energy this movement uses in a day and how efficiently its rotor converts motion into power. Match it and the Conquest Automatic L1.641 Chronograph holds a healthy reserve indefinitely. Set the winder far lower and the reserve slowly drains until the watch stops.

Overshooting is not a hazard. A slipping bridle inside the barrel releases tension once the mainspring reaches full wind — a safeguard fitted to modern automatic movements — so an excessive TPD cannot damage the watch. At worst, the movement is exercised more than it needs to be.

Aevitas winders cover 650 to 1,850 TPD with clockwise, counter-clockwise and bidirectional modes, so the 650 TPD programme above is easy to set and easy to adjust.

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