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
50

Current Listings

[WTS] Longines Conquest 41mm L3.830.4.92.6 Blue Dial - New/Unworn - $1,800

Longines Conquest 41mm L3.830.4.92.6 Blue Dial - New/Unworn - $1,800

Longines - L3.830.4.92.6 · $1,800
This Longines Conquest L3.830.4.92.6 features a blue sunburst dial and is in perfect condition, having never been worn.

  • Condition: New/Unworn
  • Case size: 41mm diameter
Posted at
Mar 24, 2026, 9:23 AM
Active
[WTS] Longines Hydroconquest with Box+Papers

Longines Hydroconquest with Box+Papers

A gently used Longines Hydroconquest in excellent condition, complete with box, papers, and original accessories.

  • Condition: Near perfect with minor scratches on the back of the lugs
  • Box And Papers: Included
  • Bracelet Links: Extra links after sizing
  • Warranty Card: Included
Posted at
Mar 22, 2026, 5:10 PM
Active
[WTS] OEM Longines HydroConquest GMT 41mm Black Rubber Strap (21mm) w/ OEM Deployant Clasp – Excellent

OEM Longines HydroConquest GMT 41mm Black Rubber Strap (21mm) w/ OEM Deployant Clasp – Excellent

A Longines HydroConquest GMT watch with a 41mm black rubber strap and deployant clasp, featuring a comfortable on-the-fly micro-adjust mechanism. The watch has been worn sparingly and shows minimal signs of wear.

  • Condition: Lightly used
  • Lug width: 21mm
  • Clasp type: deployant
Posted at
Mar 22, 2026, 3:26 PM
Active
[WTS] Longines Hydroconquest GMT - Sunray Brown - 41mm- Full Kit - Excellent Condition

Longines Hydroconquest GMT - Sunray Brown - 41mm- Full Kit - Excellent Condition

A Longines Hydroconquest GMT 41mm with a sunray brown dial and ceramic bezel insert, featuring an updated bezel and quick-adjust bracelet. It has a true GMT movement that keeps excellent time.

  • Condition: Excellent
  • Case size: 41mm
  • Lug-to-lug: 49.2mm
  • Thickness: 12.8mm
Posted at
Mar 21, 2026, 12:28 PM
Active
[WTS] 1960s Longines Conquest Ref. 7012.1 Cal.291 | Great Condition (Serviced) | $700

1960s Longines Conquest Ref. 7012.1 Cal.291 | Great Condition (Serviced) | $700

This 1960s Longines Conquest Ref. 7012.1 Cal.291 is a clean, well-proportioned everyday piece from Longines' golden era. It features an automatic movement with Incabloc shock protection and a self-winding system.

  • Condition: Great condition, serviced
  • Case Size: 35mm diameter
  • Lug Width: 18mm
  • Crystal Type: plexiglass
Posted at
Mar 19, 2026, 12:40 AM
Active
[WTS] Longines HydroConquest 41mm Two Tone $1750

Longines HydroConquest 41mm Two Tone $1750

Longines - HydroConquest · $1,750
Longines HydroConquest in a two-tone version, sold as-is.

  • 41mm diameter: case size
Posted at
Mar 18, 2026, 12:52 PM
Active
Longines HydroConquest, L3.781.4.06.9, Steel Diver, Olive, Excellent Condition.

Longines HydroConquest, L3.781.4.06.9, Steel Diver, Olive, Excellent Condition.

Longines - L3.781.4.06.9 · $1,095
This Longines HydroConquest is a steel diver's watch with an olive green matte dial and a unidirectional rotating ceramic bezel. The stainless steel case measures 41mm in diameter and has a water resistance of up to 300 meters.

  • Condition: Excellent Condition
  • Case Diameter: 41mm
  • Thickness: 11.9mm
  • Bezel Type: Unidirectional rotating Green Ceramic
Posted at
Feb 5, 2025, 2:47 AM
Active