Longines

HydroConquest — Black

Ref. L3.782.4.56.6 · 43mm · Automatic · Stainless steel · MSRP $1,400.00

Market research

Secondary / used

Asking $1,286–$1,600

Suggested ceiling ~$1,350

watch only · single_source

Single aggregator source (Chrono24), per-listing completeness not individually verified -- tier is a conservative approximation (watch_only), not confirmed box/papers status, hence single_source confidence rather than cross_verified. Existing open follow_up flag on this watch (msrp $1,400 on file vs ~$2,000 real current MSRP) NOT touched here -- this secondary pricing sits below either figure, consistent with normal used depreciation regardless of which MSRP is correct; doesn't resolve the flag. 5% discount assumption applied for suggested_buy off the low end of the observed cluster, typical for Chrono24 private-seller negotiation. No suggested_sell -- want-list item, not a flip.

Sources: Chrono24 aggregate listings for ref L3.782.4.56.6, cluster of asks $1,286-1,957 (2026-08-08); used the lower $1,286-1,600 cluster here as watch_only/partial_set tier, treating the $1,774-1,957 outliers as likely full_set/NOS and excluding them from this pass rather than blending tiers

Spec

Diameter
43mm
Lug width
21mm
Case thickness
11.9mm
Movement
Automatic
Caliber
L888.2
Case material
Stainless steel
Bezel
Unidirectional rotating, ceramic insert
Crystal
Sapphire (AR coating both sides)
Dial color
Black (sunray)
Complications
date
Water resistance
300m
Power reserve
64h
Jewels
21
Strap/bracelet
Bracelet
Strap material
Stainless steel
Clasp
Double safety folding clasp

Source note

Spec backfill (2026-08-07, round 5, batch 2): direct PrestigeTime product-page fetch for this exact reference, cross-checked against WatchMaxx and a general aggregate search -- all agreeing on case/movement specs. Caliber L888.2's power reserve is consistently cited at ~64h specifically for this reference across two independent sources, distinct from the base L888 family's published 72h (calibercorner.com notes Longines documents its L888 sub-variants -- .2, .3, .4, .5, .6 -- inconsistently); went with the reference-specific 64h rather than the generic base-caliber figure. FLAGGING FOR TONY: msrp on file is $1,400, but every current-pricing source checked (PrestigeTime $2,000 MSRP with $1,560 their price, WatchMaxx, Chrono24 asking range $1,292-2,000) consistently points to a genuine current MSRP around $2,000 for this exact reference -- a ~40% gap, the largest and most consistent price mismatch found in this batch. Not touched (msrp already on file, not asked to fix), but this reads as a real discrepancy worth checking, not just a pricing-snapshot difference. Unresolved: lug_to_lug_mm, year_introduced, year_discontinued, watch_type.