Skip to content

Longines — HydroConquest

Also known as: HydroConquest

DocumentedSupported by at least one credible specialist source.

Record status

Documented family · partial

Period

2018–2026 (sampled references)

Maker / issuer

Longines

HydroConquest is a wristwatch family made by Longines. Production years recorded for the sampled references run from 2018 to 2026. Recorded movements are Longines caliber L250, Longines caliber L888.5 and Longines caliber L688.2, with functions including hours, minutes, seconds, date, chronometer and small seconds.

The sampled references record case diameters of 25–42 mm, heights of 11.7 mm, cases in stainless steel and water resistance of 300 m. Reference examples: ref. L3.147.0.87.6 (Hydroconquest Quartz 25 Diamond; 25.00 mm); ref. L3.788.4.98.6 (Hydroconquest Automatic 42 Stainless Steel / Frosted Blue / Bracelet; 2026; 42.00 mm); ref. L3.783.4.56.9 (HydroConquest 41 Automatic Chronograph Stainless Steel / Ceramic / Black / Rubber; 2018; 41.00 mm).

Evidence at a glance

Linked sources
2
Photograph views
3
Catalogue references
4

Counts describe this entry’s documentation, not authenticity, rarity or completeness. Photographs may show one specimen; check each caption and licence.

Physical characteristics

Bezel
Rotating, 60-0 (Pilot), Rotating, 0-60 (Dive)
Crystal
Sapphire
Case back
Closed
Lug width
21 mm
Case shape
Round
Case height
11.7 mm
Case materials recorded
Stainless Steel
Case diameter (sampled references)
25–42 mm

Technical characteristics

Functions recorded
Hours, Minutes, Seconds, Date, Chronometer, Small Seconds, Chronograph, Column wheel
Movements recorded
Longines caliber L250 · Longines caliber L888.5 · Longines caliber L688.2
Production years recorded
2018–2026
Water resistance recorded
300 m

Design

Hands
Stick, Proprietary
Hour markers
Mixed, Stick / Dot
Dial colours recorded
White, Blue, Black

Identification

How to identify
The reference number, usually found on the case back, between the lugs or on papers, ties a watch to one of these configurations; movement calibre, case material and dial together separate references within the family.
Family as listed
HydroConquest
References sampled
L3.147.0.87.6 — Hydroconquest Quartz 25 Diamond L3.788.4.98.6 — Hydroconquest Automatic 42 Stainless Steel / Frosted Blue / Bracelet L3.783.4.56.9 — HydroConquest 41 Automatic Chronograph Stainless Steel / Ceramic / Black / Rubber
Distinguishing features
Reference number, movement calibre, case material and dial colour together
Representative reference
L3.147.0.87.6 (aka: L31470876)
Source note
All figures follow WatchBase and describe only the references sampled here; they have not been checked against the manufacturer's archive. WatchBase, an online database of watch references, lists 233 references under this family name; this entry summarises 3 of them, chosen across that list, including the reference originally recorded for this entry. The reference list, calibres and case specifications summarised above come from WatchBase; the manufacturer's own archive or a printed reference work should be consulted before treating any detail as definitive. That figure is not necessarily the family's introduction date: earlier references may exist outside the sample, and WatchBase coverage of discontinued models is uneven.

Catalogue references

Varieties

  • Ref. L3.147.0.87.6 — Hydroconquest Quartz 25 Diamond

    Longines caliber L250; 25.00 mm stainless steel; White dial. Source: WatchBase.

  • Ref. L3.788.4.98.6 — Hydroconquest Automatic 42 Stainless Steel / Frosted Blue / Bracelet

    produced 2026; Longines caliber L888.5; 42.00 mm; Blue dial. Source: WatchBase.

  • Ref. L3.783.4.56.9 — HydroConquest 41 Automatic Chronograph Stainless Steel / Ceramic / Black / Rubber

    produced 2018; Longines caliber L688.2; 41.00 mm stainless steel; Black dial. Source: WatchBase.

Research required

  • Research Required: confirm the family's introduction date, full reference list and production span against the manufacturer's archive or a printed reference; WatchBase figures cover only the sampled references.
Can you source one of these? Submit a reference