Longines HydroConquest Full Black Ceramic
L3.784.4.56.9
The Longines HydroConquest Full Black Ceramic is a 43 mm ceramic dive watch with an L888.3 automatic movement.
4 official photos · reader photos welcome
Price
$4,700
Material
Ceramic
Grade / type
Black ceramic (zirconia, ZrO2)
Water resistance
300 m
- Reference
- L3.784.4.56.9
- Type
- Diver
- Case diameter
- 43.0 mm
- Origin
- Switzerland
- Movement
- Automatic, 25,200 vph
- Caliber
- L888.3 (ETA A31-L01 base)
- Power reserve
- 72 hours
- Complications
- Date
- Colour
- Black
- Construction
- Monobloc
- Finish technology
- Natural finish
- Caseback
- Ceramic
- Nickel-free
- Unconfirmed (bracelet, strap, or clasp hardware not confirmed)
- Bracelet / strap
- Black rubber strap with a ceramic double-safety folding clasp
- Crystal
- Sapphire
- Display back
- No
- Dial
- Matte black with applied indices
- Dial colours
- Black
- Lume
- Super-LumiNova
- Availability
- Offered
- Status
- Current
- Not published
- Thickness, Lug-to-lug, Weight, Hardness, Surface treatment, Matching bracelet
Medium confidence
Verified Jul 2026
Source: Longines (maker) / Monochrome hands-on / aBlogtoWatch hands-on
Facts are free to cite with a link.
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Frequently asked questions
What is the case of the Longines HydroConquest Full Black Ceramic made of?
The case is black ceramic (zirconia, zro2). The guide has not yet confirmed it on the maker's own page. The caseback is ceramic.
What size is the Longines HydroConquest Full Black Ceramic?
The case is 43 mm across. It is water resistant to 300 m.
How much does the Longines HydroConquest Full Black Ceramic cost, and is it available?
It is in production, at a list price of $4,700.
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