Longines HydroConquest Full Black Ceramic

Name: Longines HydroConquest Full Black Ceramic
Brand: Longines
Price: 4700 USD
Availability: InStock

L3.784.4.56.9

The Longines HydroConquest Full Black Ceramic is a current-production diver watch with a black ceramic (zirconia, zro2) case. It is priced under the $6,950 median for the category.

All Longines watches Ceramic diver watches Black ceramic Divers Under $5,000

No photos yet · reader photos welcome

Price

$4,700

Ceramic

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
Caseback: Ceramic
Nickel-free: Not verified (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, Ceramic bracelet

Medium confidence Verified Jul 2026 Source: Longines (maker) / Monochrome hands-on / aBlogtoWatch hands-on

Facts are free to cite with a link.

See it in the interactive guide

Similar ceramic watches

RadoCaptain Cook High-Tech Ceramic$4,30043.0 mm14.6 mm thickDiversame category · same style · similar price · similar size

Bell & RossBR-03 Diver Full Lum Ceramic$4,60042.0 mm12 mm thickDiversame category · same style · similar price · similar size

RadoCaptain Cook High-Tech Ceramic Diver$4,25043.0 mm14.6 mm thickDiversame category · same style · similar price · similar size

RadoCaptain Cook High-Tech Ceramic (plasma)$4,60043.0 mm14.6 mm thick157 gDiversame category · same style · similar price · similar size

RadoCaptain Cook High-Tech Ceramic Skeleton$4,60043.0 mm14.6 mm thickDiversame category · same style · similar price · similar size

TudorBlack Bay Ceramic$4,65041.0 mmDiversame category · same style · similar price · similar size

RadoCaptain Cook High-Tech Ceramic$4,70043.0 mm14.6 mm thickDiversame category · same style · similar price · similar size

BremontSupermarine Full Ceramic Tactical Black$6,45043.0 mm13 mm thick74 gDiversame category · same style · similar price · similar size

Alternatives to the Longines HydroConquest Full Black Ceramic

RadoCaptain Cook High-Tech Ceramic 43mm$2,80043.0 mmDiversame category · same style · shared complications · similar price

BremontSupermarine Full Ceramic Polar White$6,95043.0 mm13 mm thick74 gDiversame category · same style · shared complications · similar price

BremontSupermarine Full Ceramic Jungle Green$6,95043.0 mm13 mm thick74 gDiversame category · same style · shared complications · similar price

PaneraiSubmersible QuarantaQuattro Luna Rossa Ti-Ceramitech (blue dial)$16,60044.0 mmDiversame category · same style · shared complications · similar size

BlancpainFifty Fathoms Bathyscaphe Ceramic$16,70043.6 mm13.8 mm thickDiversame category · same style · shared complications · similar size

Frequently asked questions

What kind of ceramic is the Longines HydroConquest Full Black Ceramic?

The Longines HydroConquest Full Black Ceramic has a black ceramic (zirconia, zro2) case with a ceramic caseback. It is recorded at medium confidence pending a maker-stated type.

What size is the Longines HydroConquest Full Black Ceramic?

It is 43.0 mm in diameter, and water resistant to 300 m.

How much does the Longines HydroConquest Full Black Ceramic cost, and is it available?

It is current-production and lists from $4,700.

All ceramic Longines watches · Ceramic diver watches · All 231 watches

Learn: Best Ceramic Watches · Best Under $5,000 · Is It Worth It? · Color Guide