Longines HydroConquest Watch
  • Longines HydroConquest Watch, image 1
  • Longines HydroConquest Watch, image 2
  • Longines HydroConquest Watch, image 3
  • Longines HydroConquest Watch, image 4

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Item Details

The HydroConquest in grey and rose gold holds a quiet kind of power. It moves like a tool built for pressure, but it looks like something meant for conversation. This piece doesn’t lean into one identity. It balances between sport and polish, utility and presence, with every detail working toward that middle ground.

The case measures 39mm across. That size lands in a sweet spot. Large enough to catch the eye. Compact enough to wear without drawing attention to itself. Stainless steel and ceramic build the structure. The materials alternate in tone and texture. The steel brings weight. The ceramic adds resistance. Both carry the same muted grey finish, smoothed and brushed to a semi-matte sheen. The bezel rotates with a quiet click. It locks with precision. Each grip on the edge feels like it was cut by a toolmaker. It serves a purpose, but carries a bit of style in the way it holds light.

The dial is a shade of grey that changes with each glance. At first it reads flat, almost industrial. Then it picks up the warmth from the rose gold hands and markers. Suddenly it feels deeper. The contrast brings a quiet glow across the face. The markers mix Arabic numerals at the cardinal points with simple dots and lines elsewhere. They’re crisp, filled with lume, and easy to read without checking twice. The rose gold hands follow the same rule. Broad. Clean. Luminous. A small date window sits at 3 o’clock. The background matches the dial. The numerals are sharp. Nothing draws extra attention, but nothing gets lost.

Inside the case, the Longines Caliber L888 movement handles the time. It’s automatic and self-winding. It runs with a 72-hour power reserve. That’s three days of reliability. No winding. No adjustment. Once it’s set, it stays on beat.

The crystal covering the dial is sapphire. It resists scratches and stays clear. The surface is flat, so there’s no distortion. The edge rises just slightly above the bezel, giving the face a framed look without interrupting the profile.

The strap is grey rubber. It’s soft, but firm. There’s texture in the design, a fine pattern that keeps it from feeling slick. The rubber hugs the wrist, and the deployant clasp locks it into place with a secure click. There’s no overhang. No slip. The connection feels sealed.

This HydroConquest doesn’t overperform. It stays composed. Built for water, designed for daily wear, and dressed just enough to walk into any setting without feeling out of place. The grey tones bring calm. The rose gold brings heat. Together they give this watch a subtle tension. A contrast that plays out across the dial every time you catch the light. It doesn’t compete and instead sits apart. Confident in what it offers. Precise in how the Longines HydroConquest keeps time. Made for someone who prefers depth over volume.

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Item

  • Brand

    Longines

  • Series

    HydroConquest

  • Sub Series

    Automatic

  • Gender

    Men's

  • Code

    L3.780.3.78.9

  • MPN

    L3.780.3.78.9

  • UPC

    7612356221690

  • Brand Origin

    Swiss Made

Case

  • Case Material

    Ceramic & Stainless Steel

  • Case Finish

    Brushed

  • Case Shape

    Round

  • Case Diameter

    39mm

  • Case Thickness

    12.2mm

  • Case Back

    Solid

  • Bezel

    Uni-directional Rotating. Minute Scale

  • Crystal

    Scratch Resistant Sapphire

  • Crown

    Push-Pull

Dial

  • Dial Color

    Grey

  • Dial Description

    Luminous Rose Gold Tone Hands with Arabic Numeral & Stick Hour Markers with Minute Markers Around the Outer Rim and the Date at 3 o'clock on a Grey Dial

  • Dial Markers

    Arabic & Stick

  • Hand Color

    Rose Gold

  • Calendar

    Date at 3 o'clock

  • Functions

    Date, Power Reserve and Hour, Minute, Second

Movement

  • Movement

    Automatic Self Winding

  • Engine

    Longines Caliber L888

  • Power Reserve

    Approx. 72 hours

  • Movement Description

    Swiss Automatic

Band

  • Band Material

    Rubber

  • Band Color

    Grey

  • Band Description

    Grey Rubber

  • Clasp Type

    Deployment with Push Button and Foldover

Additional Information

  • Water Resistant

    300 Meters - 990 Feet

  • Style

    Sports

  • Warranty

    5 Year WatchMaxx Warranty

  • Also Known As

    L37803789, L3.780.3.78.9

Brand New Authentic Longines HydroConquest Automatic Grey Dial Rubber Strap Men's Sports Watch Model L3.780.3.78.9. Brushed Stainless Steel case with Grey Rubber strap. Deployment with Push Button and Foldover clasp. Uni-directional Rotating. Minute Scale bezel. Dial description: Luminous Rose Gold Tone Hands with Arabic Numeral & Stick Hour Markers with Minute Markers Around the Outer Rim and the Date at 3 o'clock on a Grey dial. Swiss Automatic movement. Powered by Longines Caliber L888 engine with 72 hours power reserve. Watch functions: Date, Power Reserve, Hour, Minute, Second. Push-Pull crown. Scratch Resistant Sapphire crystal. Round case shape. Case size: 39mm. Case thickness: 12.20mm. Engraved Case Back. 300 Meters - 990 Feet water resistant. 5-year WatchMaxx warranty. The HydroConquest in grey and rose gold holds a quiet kind of power. It moves like a tool built for pressure, but it looks like something meant for conversation. This piece doesn’t lean into one identity. It balances between sport and polish, utility and presence, with every detail working toward that middle ground.The case measures 39mm across. Also known as model: L37803789.

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Shipping methodCostEstimated arrival
Continental USA StandardFreeFrom Monday 10/5/2026 to Monday 11/9/2026
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