Longines

Hydroconquest Stainless Steel 39 mm Black

Reference Number :

L3.730.4.56.6

Series : Conquest

Retail: $1,100

(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 isn't just telling time; it's whispering tales of underwater adventures while looking sharp enough for a captain's dinner. Its sturdy stainless steel build, from the screw-down crown to the secure clasp, gives a nod to its 30 bar water resistance – that's serious depth-defying capability. The sunray black dial, protected by a virtually unscratchable sapphire crystal, lights up with Super-LumiNova when the lights go down. And with a reliable quartz heart (Caliber L156, mind you, complete with an E.O.L. ticker), it’s always ready for the next plunge or the next appointment, no fuss required.

DescriptionThe timepiece, designated L3.730.4.56.6, features a round stainless steel case construction with a diameter of 39.00 mm, a lug distance of 19 mm, a lug-to-lug span of 48.10 mm, and a thickness of 10.10 mm. The case incorporates a screw-down case back and a screw-in crown, contributing to its water resistance rating of 30 bar. A unidirectional rotating bezel is integrated into the case design. Protection for the dial is provided by a scratch-resistant sapphire crystal, enhanced with several layers of anti-reflective coating on its underside. The total weight of the watch is 158.9 grams. The bracelet is also fabricated from stainless steel and is secured with a double safety folding clasp mechanism.

Internally, this model is powered by the L156 quartz caliber, utilizing a RENATA 371 battery. The movement facilitates the display of hours, minutes, seconds, and a date function. An End Of Life (E.O.L.) indicator is a notable special function of the movement. The sunray black dial presents information via applied Arabic numerals and indexes, complemented by silvered polished hands. For enhanced legibility in low-light conditions, Swiss Super-LumiNova® is applied to specific dial elements.

GenderMen

SignaturesLongines

Country of OriginSwitzerland

Case Size39 mm

MovementQuartz

CaliberL156

FunctionsHours, Minutes, Seconds, Date

Case MaterialsStainless Steel

Bezel MaterialsStainless Steel

Lug MaterialsStainless Steel

Case BackSolid

CrownScrew Down