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44 mm stainless steel case with hyper-domed sapphire crystal gray skeleton dial black silicone strap

U-Boat

U-Boat U-65 3354 44 mm Quartz Watch

SKU CH-5GY8-W1RBG MPN 3354

A 44 mm stainless steel quartz watch with an oil-filled gray skeleton dial under a hyper-domed sapphire crystal and a 22 mm black silicone strap

  • StyleSports
  • Series NameU-65
  • MaterialStainless Steel/Silicone
  • MovementQuartz
  • ColorGray/White/Silver/Black
  • Dial ColorGray
  • Oil-filled dial amplifies legibility and depth
  • 44 mm hyper-rounded stainless steel case
  • Swiss Ronda 756 quartz movement with oil bath
  • Patented mobile lugs adapt to wrist shape
  • 50 m water resistance with sapphire crystal

U-65 Hypercurve Timepiece

The U-Boat U-65 reference 3354 is a 44 mm stainless steel wristwatch built around the brand's Hypercurve philosophy. Its fluid, hyper-rounded case shape breaks from conventional watch design and targets the adult male buyer who wants a sports-style piece with a distinct architectural presence on the wrist.

Oil-Filled Dial and Mobile Lugs

A scratch-resistant hyper-domed sapphire crystal covers a gray skeletonised metal dial with three stacked levels. The dial cavity is filled with a special oil that amplifies legibility and creates the illusion of a missing crystal, while a visible air bubble compensates for temperature shifts. Patented mobile lugs let the 22 mm black silicone strap follow the wrist's natural curves, secured by a signed stainless steel buckle.

50 m Water Resistance and Caseback Crown

The watch is rated to 50 metres or 165 feet, suitable for splashes and brief immersion but not for swimming or diving. Time setting is handled by a discreet button at the centre of the solid caseback, which also integrates a locking system and a quick battery hatch for the Swiss Ronda caliber 756 quartz movement lubricated by an oil bath.

Highlights

  • Oil-filled dial amplifies legibility and depth
  • 44 mm hyper-rounded stainless steel case
  • Swiss Ronda 756 quartz movement with oil bath
  • Patented mobile lugs adapt to wrist shape
  • 50 m water resistance with sapphire crystal

Specifications

BrandU-Boat
Model3354
Part Number3354
StyleSports
Series NameU-65
MaterialStainless Steel/Silicone
MovementQuartz
ColorGray/White/Silver/Black
Dial ColorGray
Dial MaterialMetal
Dial MarkersArabic
DisplayAnalog
Band MaterialSilicone
Band Width22 mm
FastenerBuckle
GenderMale
AgeAdult
ConditionNew
BezelFixed
Case BackSolid
Case Diameter44 mm
Case MaterialStainless Steel
Case Thickness18.70 mm
CrystalSapphire Crystal
Water-Resistant50 m
Special FeaturesScratch-resistant

Questions about this item

How deep does the 50 m water-resistance rating actually protect the watch?

The 50 m rating covers swimming and showering but not diving or high-pressure water sports.

Will the 44 mm case and 22 mm lug width fit a standard 22 mm strap if I want to change the black silicone band?

Yes, the 22 mm lug width accepts any standard 22 mm strap with spring bars.

How do I set the time without a crown, and what is the common mistake?

Press the recessed button on the caseback to adjust the hands; the mistake is forcing the non-existent crown on the case side.

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