Longines
Longines HydroConquest 41 Automatic Stainless Steel / Rose Gold / Grey / Rubber L3.781.3.78.9
The Longines HydroConquest 41 Automatic Stainless Steel / Rose Gold / Grey / Rubber (reference L3.781.3.78.9) is a 41 mm stainless steel / rose gold watch with a grey dial.
Specifications
Case
- Reference
- L3.781.3.78.9
- Collection
- HydroConquest
- Case size
- 41 mm
- Case material
- Stainless steel / rose gold
- Bracelet / strap
- Rubber strap
Dial and bezel
- Dial
- Grey
Movement
- Movement
- Automatic
Dial versions
This reference was made with these dials and finishes.
L3.781.3.78.9 Grey
Grey
How it compares within the HydroConquest family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| L3.781.3.78.9 (This watch) | 41 mm | Stainless steel / rose gold | Grey | — | — |
| L3.247.4.16.6 | 29.5 mm | — | White | — | — |
| L3.690.4.19.6 | — | — | — | — | — |
| L3.696.4.53.2 | — | — | — | — | — |
| L3.742.3.56.7 | 41 mm | Stainless steel / yellow gold | Black | — | — |
| L3.742.4.98.6 | 41 mm | Stainless steel | Blue | — | — |
| L3.780.4.56.6 | 39 mm | Stainless steel | Black | — | — |
| L3.781.4.76.9 | 41 mm | Stainless steel | Grey | — | — |
| L3.790.4.06.6 | 41 mm | Stainless steel | Green | — | — |
About the HydroConquest family
HydroConquest is Longines' main modern dive collection, introduced in 2007 and completely redesigned in 2018. Current models have a ceramic bezel insert, a screw-down crown, a water resistance of 300 metres and a range of case sizes, with chronographs and, since 2023, a GMT.
The catalog lists a very large number of references in steel and in steel with gold, which differ in case size, dial and bezel colour, and strap or bracelet. The final digit of the reference shows the bracelet or strap, so check it against the watch. HydroConquest is bought to be worn, so look at the bezel, crystal and bracelet for wear.
Quick answers
- What size is the Longines HydroConquest 41 Automatic Stainless Steel / Rose Gold / Grey / Rubber L3.781.3.78.9?
- The Longines HydroConquest 41 Automatic Stainless Steel / Rose Gold / Grey / Rubber L3.781.3.78.9 has a 41 mm case.
- What is the Longines HydroConquest 41 Automatic Stainless Steel / Rose Gold / Grey / Rubber L3.781.3.78.9 made of?
- The case is stainless steel / rose gold. Bracelet or strap: Rubber strap.
Catalog facts checked October 2026.