Longines

Hydroconquest Stainless Steel 41 mm Black

Reference Number :

L3.781.4.56.6

Series : Conquest

Retail: $1,850

(As of: 05/2025)

This watch is not for sale, this page is just for reference purposes only. If you would like to purchase this watch, please contact Longines. If you are interested in selling this watch to us, you can contact us here.

Quick TakeThis Hydroconquest is a proper tool watch that cleans up nicely. Think sturdy stainless steel, a tough ceramic bezel that won't scratch easily, and a serious 30 bar water resistance – it's ready for actual diving, not just desk diving. Inside, the L888 automatic movement keeps ticking reliably for 3 days straight. The 41mm size hits that sweet spot, legible with its sharp black sunray dial and bright lume, yet comfortable enough for daily wear. It's got that confident, capable vibe without shouting about it.

DescriptionThe timepiece presents a round case fabricated from stainless steel, complemented by a ceramic bezel insert. Its dimensions measure 41.00 mm in diameter, with a lug distance of 21 mm, a lug-to-lug span of 51.10 mm, and a thickness profile of 11.90 mm. Protection for the dial is afforded by a scratch-resistant sapphire crystal, enhanced with multiple layers of anti-reflective coating applied to both surfaces. Structural integrity is maintained via a screw-down case back and a screw-in crown. The bezel functionality incorporates a unidirectional rotating mechanism, crucial for dive time tracking. Engineered for aquatic environments, it offers water resistance up to 30 bar. The overall weight of the watch head and bracelet assembly is registered at 185.7 g.

Internally, the watch operates on the Caliber L888, a self-winding mechanical movement. This automatic system oscillates at a frequency of 25'200 vibrations per hour and provides a substantial power reserve extending up to 72 hours. Time indication includes hours, minutes, and seconds, alongside a date function. The display features a sunray black dial surface, upon which applied Arabic numerals and indexes serve as hour markers. Time is read via silvered polished hands, treated, along with the markers, with Swiss Super-LumiNova® for low-light visibility. The accompanying bracelet is constructed from stainless steel and secured with a double safety folding clasp mechanism.

GenderMen

SignaturesLongines

Country of OriginSwitzerland

Case Size41 mm

MovementAutomatic

CaliberL888

FunctionsHours, Minutes, Seconds, Date

Power Reserve72 Hours

Case MaterialsStainless Steel

Bezel MaterialsCeramic

Lug MaterialsStainless Steel

Case BackSolid