We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
41 mm round stainless steel case with rose gold PVD bezel, blue ceramic top ring, sunray blue dial with Arabic markers

Longines

Longines HydroConquest L3.781.3.98.9 41 mm blue dial rubber strap watch

SKU CH-1JKK-FJKF8 MPN L3.781.3.98.9

A 41 mm Swiss automatic dive watch with a sunray blue dial, rose gold PVD bezel, and 300 m water resistance

  • StyleLuxury
  • Series NameHydroConquest
  • MaterialStainless Steel/Rubber
  • MovementSwiss Automatic
  • ColorBlue/Rose Gold
  • DesignLuxury
  • Swiss automatic movement delivers 72 hours power reserve
  • 41 mm stainless steel case with rose gold PVD bezel
  • 300 m water resistance suits professional diving
  • Scratch-resistant sapphire crystal protects the blue dial
  • Double safety folding clasp secures the rubber strap

HydroConquest 41 mm dive watch

The Longines HydroConquest L3.781.3.98.9 is a 41 mm stainless steel dive watch with a rose gold PVD bezel and a blue rubber strap. It suits buyers who want a Swiss automatic timepiece rated for 300 m water resistance and a 72-hour power reserve.

Check wrist size and clasp preference

The band width is 21 mm and the case thickness is 11.90 mm, so verify that the proportions suit your wrist. The double safety folding clasp with push-piece opening requires a secure fit; ensure you are comfortable with this fastening style before ordering.

Build around a single versatile watch

The screw-down crown and uni-directional rotating bezel support dive timing, while the sapphire crystal and solid caseback protect the L888 calibre beating at 25,200 vibrations per hour. The blue dial with Arabic markers at 6, 9 and 12 and a date window at 3 o'clock covers daily wear without needing additional straps.

Highlights

  • Swiss automatic movement delivers 72 hours power reserve
  • 41 mm stainless steel case with rose gold PVD bezel
  • 300 m water resistance suits professional diving
  • Scratch-resistant sapphire crystal protects the blue dial
  • Double safety folding clasp secures the rubber strap

Specifications

BrandLongines
ModelL37813989
Part NumberL37813989
StyleLuxury
Series NameHydroConquest
MaterialStainless Steel/Rubber
MovementSwiss Automatic
ColorBlue/Rose Gold
DesignLuxury
ShapeRound
Dial ColorBlue
Dial MarkersArabic
DisplayAnalog
DateDate
Band MaterialRubber
Band Width21 mm
FastenerDouble safety folding clasp and push-piece opening mechanism
GenderMale
AgeAdult
ConditionNew
BezelUni-directional Rotating
Case BackSolid
Case Diameter41 mm
Case MaterialStainless Steel
Case Thickness11.90 mm
CrownScrew-Down Crown
CrystalSapphire Crystal
Water-Resistant300 m
Special FeaturesScratch-resistant

Questions about this item

What comes in the box with the HydroConquest L3.781.3.98.9 and do I need to buy a strap or tool separately?

The watch ships on a blue rubber strap with a double safety folding clasp and push-piece opener already fitted; no extra strap or sizing tool is required.

Should I choose the stainless-steel-and-rose-gold-PVD version or a different finish for the 41 mm HydroConquest?

This reference is the sole 41 mm model combining a stainless-steel case, rose gold PVD bezel and crown, and blue ceramic bezel insert; other finishes carry different part numbers.

What does the 72-hour power reserve mean for daily wear of the caliber L888?

The movement stores enough energy to keep running for three full days off the wrist, so the watch will still be ticking after a weekend without winding.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.