Longines HydroConquest Hydroconquest Chronograph L688

Reference L3.696.4.53.2

About this watch

The Longines HydroConquest L3.696.4.53.2 is a masterpiece of watchmaking, blending elegance and functionality in perfect harmony. This luxurious timepiece boasts an impressive automatic chronograph movement, caliber L688.2, with 54 hours of power reserve and a frequency of 28,800 vibrations per hour. The stainless steel case, measuring 41 mm in diameter, exudes durability and sophistication, while the sapphire crystal adds an extra layer of protection against scratches and wear. Water-resistant up to 300 meters, this watch is perfect for diving enthusiasts and everyday wearers alike. The black dial features Arabic numeral indexes and luminous hands, ensuring excellent readability both day and night. With its sporty yet sophisticated aesthetic, the HydroConquest series has become a favorite among those who value both style and substance. Whether you're timing a workout or cooking your favorite dish, the chronograph feature is both practical and user-friendly. This watch is not just a timekeeper; it's a ticket to a lifestyle, offering a premium experience that's perfect for any occasion.
Buy Now on Jomashop
This is an affiliate link

Key Features

  • Automatic Chronograph Movement
  • Stainless Steel Case with Sapphire Crystal
  • Water-Resistant up to 300 meters
  • Black Dial with Arabic Numerals and Luminous Hands
  • 41mm Diameter, Suitable for Various Wrist Sizes

Specifications

Brand
Longines
Family
HydroConquest
Model
Hydroconquest Chronograph L688
Reference
L3.696.4.53.2
Movement
l688-2
Movement Features
  • Hours, Minutes, Small Seconds
  • Date
  • Chronograph, Column wheel
Case
Stainless Steel 41mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
300

Current Listings

[WTS] Longines HydroConquest 39mm Automatic Black Ceramic Bezel + Bracelet + WOE NATO - $750

Longines HydroConquest 39mm Automatic Black Ceramic Bezel + Bracelet + WOE NATO - $750

This Longines HydroConquest is an excellent daily-wear diver with great proportions and comfortable sizing, featuring a black dial and ceramic bezel. The watch is running well and keeping great time.

  • Condition: Excellent daily-wear, shows wear from use on the bracelet
  • Case Size: 39mm diameter
  • Bracelet Type: black ceramic bezel + bracelet + WOE NATO
Posted at
May 12, 2026, 4:18 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