Longines Conquest Conquest Automatic 29.5 Ceramic Diamond

Reference L3.299.0.87.7

About this watch

The Longines Conquest Automatic 29.5 Ceramic Diamond is a stunning blend of elegance and functionality, featuring a mother-of-pearl dial, gem-set indexes, and a luxurious bezel. Crafted from high-quality stainless steel, this 29.5mm watch boasts a classic round shape and sleek closed case back. Powered by the Longines caliber L595, it offers precision, reliability, and a 40-hour power reserve. With a water resistance of 50 meters, it's perfect for daily wear, but not suitable for diving. This luxury timepiece is ideal for fashion-forward individuals who appreciate elegant accessories, professionals looking for a versatile watch, and watch enthusiasts who value Swiss craftsmanship.

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Key Features

Automatic Movement
Mother-of-Pearl Dial
Gem-Set Indexes
Luxurious Bezel
40-Hour Power Reserve
50-Meter Water Resistance
Swiss Craftsmanship

Specifications

Brand

Longines

Family

Conquest

Model

Conquest Automatic 29.5 Ceramic Diamond

Reference

L3.299.0.87.7

Movement

l595

Movement Features

Hours, Minutes, Seconds
Date

Case

Stainless Steel 29.5mm

Dial Color

White

Crystal

Sapphire

Water Resistance

Current Listings

Longines Hydroconquest Chronograph 41 Ref. L3.783.4 – Travel Box & Manual | $1,850

Longines - L3.783.4 · $1,850

The Longines Hydroconquest Chronograph is a high-performance Swiss diver's watch that features a 41mm case, blue ceramic bezel, and screw-down crown. It houses the calibre L688.2, a column-wheel chronograph movement with a 54-hour power reserve.

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

Posted at

Apr 22, 2026, 3:35 PM

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2005 Longines Conquest Heritage L1.611.4 gilt dial with box and card!! Comes with genuine Longines band and buckle - $990 shipped!!

Longines - L16114 · $990

This is a vintage Longines Conquest Heritage with a gilt dial and automatic winding movement. It features a stainless steel case, genuine leather strap, and comes with its original box and card.

Condition: 9/10
Movement: Cal. L633.5 automatic (ETA 2824-2 base)
Case size: 35mm
Condition details: Beautiful clean gilt glossy dial

Posted at

Apr 22, 2026, 10:58 AM

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[WTS] Longines "Conquest" 1970s/Early '80s Integrated Solid Link Bracelet Calibre L.746.2 Ref.4384 (ETA 954.111) $445 (message me if you can't see the details/description in the comments)

Longines "Conquest" 1970s/Early '80s Integrated Solid Link Bracelet Calibre L.746.2 Ref.4384 (ETA 954.111) $445 (message me if you can't see the details/description in the comments)

Longines - 4384 · $445

This vintage Swiss-made Longines Conquest from late-1970s or early-1980s features a beautiful integrated steel sports watch design with a subtle grey and light brown dial. The high polish stick indices have a black line going through them and work well with the black dipped pencil hands.

Condition: Great condition considering it was made about 45 years ago
Case dimensions: 30.2mm x 37.8mm x 7.7mm
Bracelet length adjustability: Solid links with screw pins for easy and hassle-free changes
Wrist size range: up to roughly 18cm

Posted at

Apr 20, 2026, 11:06 PM

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Longines HydroConquest GMT 41mm Black, Full Kit, June 2025

Longines - HydroConquest GMT · $1,980

Up for sale is my mint condition Longines HydroConquest GMT, a full kit with box, papers, tags, and over 4 years left on the factory warranty.

Condition: Mint condition
Case dimensions: 41mm diameter, 49mm lug to lug, 12.9mm thickness
Movement: L844.5 with 72hrs power reserve
Water resistance: 300m

Posted at

Apr 19, 2026, 10:47 PM

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Longines Hydroconquest 39mm Black MINT

Longines - Hydroconquest 39mm Black · $2,200

A mint condition Longines Hydroconquest 39mm in black with a super comfortable bracelet and excellent bezel action.

Condition: MINT
Bracelet type: Super comfortable bracelet
Clasp type: Excellent on the fly clasp
Bezel action: Great bezel action

Posted at

Apr 19, 2026, 9:12 AM

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Longines HyrdroConquest L3.742.4.56.6 Complete set + OEM Stainless Steel Bracelet

Longines - L3.742.4.56.6 · $775

For sale is a Longines Hydroconquest, this watch comes with its complete set including an OEM stainless steel bracelet.

Condition: great condition with light wear on the bracelet and case
Bracelet type: stainless steel
Payment methods accepted: crypto, other payment methods (except PayPal)
Trade options: Tudor, Cartier, Rolex, Omega, Breitling, AP

Posted at

Apr 17, 2026, 12:17 PM

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Longines HydroConquest 39mm Green Ceramic Bezel 2026 NEW L3.779.4.06.6 – $2800 + shipping

Longines - L3.779.4.06.6 · $2,800

This Longines HydroConquest features a stunning green ceramic bezel and matching dial, with a 39mm size that wears well on the wrist.

Condition: Brand new
Case Size: 39mm diameter
Bezel Material: green ceramic

Posted at

Apr 17, 2026, 6:00 AM

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Longines Conquest 38mm Automatic Sunray Black Men's Watch L3.720.4.52.6 - $1350 SHIPPED

Longines - L3.720.4.52.6 · $1,350

This beautiful Longines 38mm Conquest Sunray Black is a great everyday piece that can be dressed up or down, with a dial featuring a sunshine texture reminiscent of vintage Omega pie pan constellation watches.

Condition: Great condition, very little wear
Diameter: 38mm

Posted at

Apr 16, 2026, 7:15 PM

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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

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