Longines Conquest Conquest Quartz 25 Diamond

Reference L3.158.0.88.6

About this watch

The Longines Conquest Quartz 25 Diamond is a stunning representation of luxury watchmaking. This exquisite timepiece features a round stainless steel case with a diameter of 25mm, perfect for both casual and formal occasions. The mother-of-pearl dial adds a sophisticated touch, while the gem-set indexes make it easy to read the time even in low light. At its heart lies the Longines caliber L250, renowned for its accuracy and reliability. With a frequency of 28,800 vibrations per hour, this quartz movement ensures that you're always on time. The watch's remarkable water resistance of 300 meters makes it suitable for swimming, snorkeling, or even diving. Its versatile design and robust water resistance allow it to seamlessly transition from the office to a night out on the town. With its elegant design, exceptional accuracy, and versatility, this watch checks all the boxes.

Buy Now on Jomashop

This is an affiliate link

Key Features

Longines caliber L250 quartz movement
Stainless steel case with 25mm diameter
Mother-of-pearl dial with gem-set indexes
300 meters water resistance
Sapphire glass
Adjustable stainless steel bracelet
28,800 vibrations per hour frequency

Specifications

Brand

Longines

Family

Conquest

Model

Conquest Quartz 25 Diamond

Reference

L3.158.0.88.6

Movement

l250

Movement Features

Hours, Minutes, Seconds
Date

Case

Stainless Steel 25mm

Dial Color

White

Crystal

Sapphire

Water Resistance

300

Current Listings

2026 Longines Hydroconquest 39mm - Grey Bezel / Black Dial

Longines - L3-779-4-70-6 · $2,100

This 2026 Longines Hydroconquest is a 39mm grey bezel/black dial watch, purchased directly from Longines and regularly worn. It's free of major scratches or dents but has minor wear on the back of one lug.

Condition: Excellent to LNIB (like new in box)
Bracelet length: up to an 8in wrist
Bent link pin: one link pin is bent and unusable
Included accessories: all original packaging, accessories, and paperwork

Posted at

Apr 16, 2026, 3:09 PM

Active

View listing on r/WatchExchange

Longines HydroConquest Sunray Blue- L3.790.4.96.6

Longines - L3.790.4.96.6 · $2,900

A brand new Longines HydroConquest with sunray blue dial, featuring a new box and papers.

Condition: Brand new
Box And Papers: brand new

Posted at

Apr 16, 2026, 12:11 PM

Active

View listing on r/WatchExchange

[WTS] Longines HydroConquest GMT - Unworn, Full Set, Black Dial 41mm. The watch is in completely unworn condition and comes as a full set including box, papers, and all original accessories. Price:1700. UK-based. Happy to ship or meet depending on location. Dm if interested

Longines HydroConquest GMT - Unworn, Full Set, Black Dial 41mm. The watch is in completely unworn condition and comes as a full set including box, papers, and all original accessories. Price:1700. UK-based. Happy to ship or meet depending on location. Dm if interested

Longines - HydroConquest GMT · $1,700

The Longines HydroConquest GMT is a 41mm timepiece that comes as a full set including box, papers, and all original accessories. It is in completely unworn condition.

Condition: Unworn
Case Size: 41mm
Set: Full set including box, papers, and all original accessories

Posted at

Apr 16, 2026, 11:26 AM

Active

View listing on r/WatchExchange

Longines Hydroconquest GMT 41mm Black (Nov 2024)- $2950 AUD (Sydney, Australia)

Longines - L3.826.4.53.2 · $2,950

a black Longines Hydroconquest GMT watch with a 41mm case size.

Material: Stainless Steel
Diameter: 41mm
Depth rating: 300m

Posted at

Apr 16, 2026, 9:54 AM

Active

View listing on r/WatchExchange

Longines HydroConquest 41mm

Longines - L3.781.4.96.6 · $1,100

A Longines HydroConquest 41mm watch with a blue sunburst dial, featuring a clean crystal and flawless dial.

Condition: Excellent pre-owned condition
Diameter: 41mm

Posted at

Apr 15, 2026, 3:43 PM

Active

View listing on r/WatchExchange

Longines Hydroconquest Chronograph 41 Ref. L3.783.4 – Travel Box & Manual | $1,900

Longines - L3.783.4 · $1,900

This Longines Hydroconquest Chronograph is a high-performance Swiss diver's watch featuring a blue ceramic bezel and screw-down crown, powered by the calibre L688.2 column-wheel chronograph movement with a 54-hour power reserve.

Condition: Very good with minor usage marks
Case Size: 41mm x 51mm stainless steel case, 15.6mm thickness, 21mm lug width
Movement: Longines L688.2 automatic column wheel chronograph with 27 jewels, 28,800 bph, and a 54-hour power reserve
Water Resistance: 300m (30 ATM)

Posted at

Apr 15, 2026, 11:30 AM

Active

View listing on r/WatchExchange

Longines Conquest L3.835.4.72.6

Longines - L3.835.4.72.6 · $2,350

This Longines Conquest features a unique panda dial and is available for sale in excellent condition, almost entirely free of wear.

Condition: Excellent condition
Payment Methods: crypto, cash, etc (except PayPal)
Local Meeting: Yes, available to meet locally in southwest FL
Trades Accepted: Tudor, Cartier, Rolex, Omega, Breitling, AP only

Posted at

Apr 15, 2026, 10:21 AM

Active

View listing on r/WatchExchange

Longines HydroConquest GMT Black. Ref: L3.790.4.56.6 (2025) Complete. $1,950

Longines - L3.790.4.56.6 · $1,950

This Longines HydroConquest GMT Black is a modern dive watch with excellent everyday wearability, offering both tool watch functionality and travel convenience.

Condition: Excellent pre-owned
Case size: 41mm diameter
Water resistance: 300m

Posted at

Apr 14, 2026, 9:45 PM

Active

View listing on r/WatchExchange