HydroConquest: L3.665 TPD & Winder Settings | Swiss Watch Store
The Longines HydroConquest: L3.665 is built to be worn, but on the days it rests in a drawer it relies on you to keep the mainspring charged . A watch winder set to the correct TPD and rotation direction does exactly that. Below you will find the precise settings for this model, plus advice on choosing a suitable winder.
Settings at a glance
- Turns per day: 800 turns per day
- Winding direction: clockwise
These two figures are all you need. Set them on any programmable winder and your HydroConquest: L3.665 will stay at a full, healthy power reserve between wears.
Why bother getting it right?
Because a stopped watch is an annoying watch. When your HydroConquest: L3.665 drops below its power reserve, you face resetting the time, the date and any other complications before you can wear it. Dialling in the correct TPD means the watch is always running and holding accurate time, ready the moment you are. A quick reassurance: if the setting is slightly off, modern automatics are protected by a slipping mainspring, so nothing breaks — you just lose the accuracy and readiness benefits.
What to look for in a winder
Three things matter for the HydroConquest: L3.665: adjustable TPD, selectable winding direction, and enough slots for your collection. A quality programmable winder ticks the first two easily — the third is personal. Single winders suit a one-watch rotation; multi-watch winders suit anyone juggling several automatics. Explore our watch winder collection to compare single and multi-watch models.
Frequently asked questions
TPD for the HydroConquest: L3.665?
Programme your winder to 800 turns per day — that is the verified figure for this model.
Which way should the winder rotate?
Clockwise is the correct rotation for the HydroConquest: L3.665.
Is a watch winder safe for the HydroConquest: L3.665?
Yes, provided it offers the right TPD and direction settings. Avoid fixed-speed winders you cannot adjust.