U-Boat U-65 3350 44 mm Quartz Watch

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.