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Round 44 mm stainless steel case, gray skeleton dial under domed sapphire, black 22 mm silicone strap with buckle

U-Boat

U-Boat U-65 3350 44 mm Quartz Watch

SKU CH-6E6K-MCCA8 MPN 3350

A 44 mm stainless steel quartz watch with an oil-filled gray skeleton dial under a hyper-domed sapphire crystal, green Super-LumiNova markers, and a black silicone strap on patented mobile lugs

  • StyleSports
  • Series NameU-65
  • MaterialStainless Steel/Silicone
  • MovementQuartz
  • ColorGray/Silver/Green/Black
  • ShapeRound
  • Hyper-domed sapphire crystal creates illusion of no glass
  • Oil-filled dial amplifies legibility and color depth
  • Patented mobile lugs let strap follow wrist curves
  • Case-back setting button and quick-change battery hatch
  • Swiss Ronda 756 quartz movement lubricated by oil bath

Hyper-rounded case design

The U-Boat U-65 3350 uses a 44 mm stainless steel case shaped by the brand’s Hypercurve philosophy. 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 colour and legibility while a visible air bubble compensates for temperature changes. Time is set via a discreet button on the caseback rather than a conventional crown.

Oil-filled dial with mobile lugs

Buyers who want an oil-filled display that creates a crystal-less illusion and a strap that follows the wrist’s natural curves will appreciate this watch. The patented mobile lugs carry a 22 mm black silicone strap with a signed stainless steel buckle. Those who prefer a traditional pull-out crown, a lighter case profile, or a metal bracelet should look at other models.

50 m water resistance

The Ronda caliber 756 Swiss quartz movement sits in an oil bath behind a solid caseback that incorporates a quick battery-replacement hatch. The assembly is rated to 50 m or 165 ft, making the watch suitable for everyday splashes and brief immersion but not for swimming or diving activities.

Highlights

  • Hyper-domed sapphire crystal creates illusion of no glass
  • Oil-filled dial amplifies legibility and color depth
  • Patented mobile lugs let strap follow wrist curves
  • Case-back setting button and quick-change battery hatch
  • Swiss Ronda 756 quartz movement lubricated by oil bath

Specifications

BrandU-Boat
Model3350
Part Number3350
StyleSports
Series NameU-65
MaterialStainless Steel/Silicone
MovementQuartz
ColorGray/Silver/Green/Black
ShapeRound
Dial ColorGray
Dial MaterialMetal
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 is the time set on the U-65 3350, and what is the step people often miss?

Press the discrete button at the centre of the solid case back instead of looking for a crown; the patented mobile lugs and locking system remain untouched during adjustment.

What maintenance will the Ronda 756 movement need, and how is it accessed?

The Swiss quartz calibre runs in an oil bath and uses a quick battery replacement hatch on the case back, so only a standard cell change is required.

What is the first limit reached during sustained water exposure?

Water resistance is rated to 50 m (165 ft), so prolonged immersion beyond that depth is the limiting factor.

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