Longines

Hydroconquest Stainless Steel 39 mm Black

Reference Number :

L3.741.4.56.6

Series : Conquest

Retail: $1,375

(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 39mm Hydroconquest is about quiet capability. Solid stainless steel wraps around a reliable L888 automatic heart that keeps going for three days straight. Its sunray black dial and bright lume mean business, day or night. You can take it deep, too – 30 bar resistance isn't just for show, backed by the screw-down crown and case back. It's got the heft you expect (173.1g!) and that reassuring click from the dive bezel. A tough, no-nonsense tool watch that cleans up nicely.

DescriptionThis timepiece presents a round case constructed from stainless steel, measuring 39.00 mm in diameter with a thickness of 11.90 mm. The lug distance is specified at 19 mm, contributing to a total lug-to-lug dimension of 48.10 mm. Protection for the dial is provided by a scratch-resistant sapphire crystal, enhanced with several layers of anti-reflective coating applied to the underside. Case integrity is ensured by a screw-down case back and a screw-in crown, contributing to its water resistance rating of 30 bar. Additional external features include a unidirectional rotating bezel. The total weight of the watch is documented as 173.1 g.

Internally, the watch houses the Caliber L888, a self-winding mechanical movement. This automatic movement operates at a frequency of 25'200 vibrations per hour and offers a power reserve extending up to 72 hours. Its functions encompass the display of hours, minutes, seconds, and the date. The dial features a sunray black finish, appointed with applied Arabic numerals and indexes serving as hour markers. Time indication is performed by silvered polished hands, treated with Swiss Super-LumiNova® for visibility in low light conditions. The watch is secured to the wrist via a stainless steel bracelet equipped with a double safety folding clasp.

GenderMen

SignaturesLongines

Country of OriginSwitzerland

Case Size39 mm

MovementAutomatic

CaliberL888

FunctionsHours, Minutes, Seconds, Date

Power Reserve72 Hours

Case MaterialsStainless Steel

Bezel MaterialsStainless Steel

Lug MaterialsStainless Steel

Case BackSolid