HydroConquest TPD & Winder Settings | Swiss Watch Store
The Longines HydroConquest, reference L3.781.4.06.9 and the Calibre L888 is an automatic watch that performs best when its power reserve is kept topped up. If it sits unworn for a day or two, the reserve drains, the watch stops, and you are back to resetting the time and date. This guide covers the exact winder settings the HydroConquest needs, so yours is always ready to wear.
Turns per day and winding direction
The HydroConquest requires 650 turns per day, winding bidirectional (rotating both ways). Getting both numbers right matters: the TPD figure keeps the mainspring at a healthy level of charge, while the direction ensures the rotor engages efficiently rather than spinning freely.
What correct winding actually buys you
Two things: a watch that is ready, and a watch that is right. A HydroConquest held at its proper TPD stays wound between wears, so there is no resetting the time and date every few days, and the movement runs within its best rate. Modern automatics cannot be harmed by an incorrect setting — the slipping mainspring bleeds off excess winding — but only the correct setting keeps the watch performing as designed.
Which winder should you buy?
For the HydroConquest, the key feature is programmability: the winder must let you set the TPD figure and rotation direction listed on this page. Beyond that, it is a question of capacity. One watch? A single winder does the job beautifully. Several automatics? A multi-watch winder saves you configuring each piece separately. Take a look at our watch winder collection for options at every capacity.
Frequently asked questions
What TPD does the HydroConquest need?
650 turns per day is the setting to use, with the winder in bidirectional (rotating both ways) mode.
Which winding direction should I use for the HydroConquest?
Wind it bidirectional (rotating both ways). Getting the direction right keeps the rotor working efficiently.
Will any automatic watch winder work with the HydroConquest?
A programmable winder is recommended — it lets you match the exact TPD and direction this watch needs.