Longines

Stainless Steel Automatic 30 mm Mother of Pearl Diamonds

Reference Number :

L3.320.0.87.6

Series : Conquest

Retail: $4,400

(As of: 06/2025)

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 TakeDon’t let the sparkle fool you; this watch has the rugged soul of the Conquest collection. A tough, go-anywhere steel case with 10 bar water resistance guards the tireless automatic movement inside. Yet, its personality shines through a mesmerizing mother-of-pearl dial, where diamond markers catch the light. Framed by a brilliant diamond bezel, this piece is a beautiful contradiction—robust enough for daily wear but elegant enough for any occasion. It’s a tool and a jewel, all in one confident design.

DescriptionThe timepiece, reference L3.320.0.87.6, is constructed from stainless steel in a round shape. The case has a diameter of 30.00 mm, a thickness of 9.70 mm, a lug-to-lug distance of 37.80 mm, and an inter-lug width of 15 mm. Its total weight is 74.6 g. Protection for the dial is provided by a scratch-resistant sapphire crystal treated with multiple layers of anti-reflective coating on both surfaces. The case back is a screw-down, transparent design also utilizing sapphire crystal. The static case is adorned with 48 Top Wesselton IF-VVS diamonds, totaling 0.326 carats. The assembly ensures water resistance up to 10 bar.

At its core, the watch is powered by the Caliber L592, a self-winding mechanical movement. This automatic system operates at a frequency of 28,800 vibrations per hour and incorporates a monocrystalline silicon balance-spring, offering a power reserve of approximately 45 hours. The movement drives the central hours, minutes, seconds, and a date display. The dial is rendered in white mother-of-pearl and features 15 Top Wesselton VS-SI diamond indexes, which amount to 0.037 carats. Time is indicated by silvered polished hands, enhanced with Swiss Super-LumiNova® for legibility. The stainless steel bracelet is affixed with a triple safety folding clasp that incorporates a push-piece opening mechanism.

GenderWomen

SignaturesLongines

Country of OriginSwitzerland

Case Size30 mm

MovementAutomatic

CaliberL592

FunctionsHours, Minutes, Seconds, Date

Power Reserve45 Hours

Case MaterialsStainless Steel

Bezel MaterialsDiamonds

Lug MaterialsStainless Steel

Case BackSapphire Crystal