HydroConquest GMT TPD & Winder Settings | Swiss Watch Store
Wondering how to programme your watch winder for the Longines HydroConquest GMT? You are in the right place. This model carries reference L3.790.4. It is powered by the Longines Calibre L844.5 movement. Below are the correct TPD and rotation-direction figures for this model, so your watch is always ready to wear.
TPD and Winding Direction
The correct setting for the HydroConquest GMT is 650–800 turns per day, bidirectional: 650–800 turns per day with the rotor turning in both directions.
| Turns per day (TPD) | 650–800 |
| Rotation direction | Bidirectional |
| Movement | Longines Calibre L844.5 |
Why the Correct Setting Matters
An automatic watch is only as accurate as its power reserve allows. Keep the mainspring properly tensioned and the HydroConquest GMT will hold its rate and be ready to wear the instant you pick it up — no resetting the time and date. Set the TPD too low and the watch can run down between wears. The movement will not be damaged (modern automatics have a slipping mainspring that prevents overwinding), but an under-wound watch is simply not doing its job. Correct settings are about accuracy and readiness, not safety.
Choosing a Watch Winder for the HydroConquest GMT
The key feature to shop for is programmability: independent TPD and direction controls that cover 650–800 TPD bidirectional. Single-watch winders are ideal if the HydroConquest GMT flies solo; multi-watch winders make sense the moment you own two or more automatics. Our watch winder collection covers both.
HydroConquest GMT Winder FAQs
What's the correct TPD setting for the HydroConquest GMT?
The HydroConquest GMT is specified at 650–800 turns per day. Most programmable winders offer this as a standard preset.
Which winding direction should I use?
Bidirectional — the winder should rotate in both clockwise and anticlockwise directions.
Can I use any watch winder for my HydroConquest GMT?
Yes — provided it's programmable. Verify the winder offers 650–800 turns per day with bidirectional rotation before buying; fixed-setting winders may not match.