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Longines · Reference L3.780.3.78.9

Longines HydroConquest Automatic Grey Dial Rubber Strap Men's Watch L3.780.3.78.9

Exact watch variant · Dial: Grey · Case diameter: 39 mm

Save 28% vs observed original

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1 offer
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WatchMaxx

In stock · Destination terms vary

$2,350.00$1,689.00Save 28%

Worldwide · Observed 31 Aug 2026, 05:16 UTC

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Price history

Validated retailer prices plotted on the dates they were observed.

Lowest observed$1,689.00
Observed price history for Longines HydroConquest Automatic Grey Dial Rubber Strap Men's Watch L3.780.3.78.9 Line chart of 1 validated retailer price observation. The horizontal axis is observation date and the vertical axis is listed price in USD. $1,800.00$1,750.00$1,700.00$1,650.00$1,600.00$1,550.00 Aug 31 WatchMaxx: $1,689.00, 31 Aug 2026, 05:16 UTC Observation date Listed price (USD)
Tracking has just startedA line will appear after another observation from the same retailer. No earlier prices are backfilled.

Tracking started 31 Aug 2026, 05:16 UTC

  • WatchMaxx$1,689.00 · 1 observation

The exact watch

About this watch

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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Specifications

Case diameter
39 mm
Case material
Ceramic & Stainless Steel
Case thickness
12.20 mm
Bracelet
Rubber
Crystal
Scratch Resistant Sapphire
Clasp
Deployment with Push Button and Foldover
Water resistance
300 Meters - 990 Feet
Dial
Grey
Functions
Date+Power Reserve+Hour, Minute, Second
Case back
Solid
Crown
Push-Pull
Bezel
Uni-directional Rotating. Minute Scale
Movement
Longines Caliber L888