Longines HydroConquest Full Black Ceramic

The Longines HydroConquest Full Black Ceramic is a current-production diver watch with a black ceramic (zirconia, zro2) case. It is priced well above the $1,299 median for the category.

1 official photo · 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

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