Explore the U‑Boat U‑65 collection, an avant-garde series that redefines timekeeping with its hyper-curved, oil-immersed design. Crafted from robust AISI 316L stainless steel and entirely filled with a special oil, each watch creates a stunning optical illusion where the movement appears in direct contact with the glass, no distortion, maximum depth. The ultra-domed sapphire crystal and integrated compensation bubble enhance legibility and give the dial a floating, three-dimensional effect