Longines Conquest Automatic L1.634.4.16.6 TPD & Winder Settings | Aevitas

If your Longines Conquest Automatic L1.634.4.16.6 (L1.634.4.16.6) lives in a rotation with other watches, a winder is what keeps it ticking between wears. This model calls for 650 TPD with rotating in both directions rotation.

Recommended Winder Settings

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

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Why These Settings Matter

Every automatic movement is designed to receive a certain amount of winding each day. Give the Conquest Automatic L1.634.4.16.6 its 650 turns and the mainspring stays in the middle of its power band, where timekeeping is most consistent. Drop well below that figure and the watch gradually runs down; the date and time then need resetting by hand.

There is no need to worry about going over the top: like all modern automatics, this movement has a slipping mainspring bridle that lets the barrel slip once it is fully wound, so extra turns cannot overwind or damage it. A higher setting simply means the winder cycles a little more often than strictly necessary.

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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