U-Boat Watch DarkmoonSS/A Black SS 8463/B. U-Boat Darkmoon watches go beyond the boundaries of traditional design, combining innovative features with retro style lines.

Featuring a Swiss electromechanical movement that is completely immersed in low viscosity lubricating oil. The oily liquid flows into the dial producing an absolute and deep black colour and creating an ever-moving compensation bubble. This surprisingly amplifies the view of the hands that seem to flow free as in the absence of the glass.The steel case is completely filled with a special oil that emphasizes the dial, creating an optical effect of a more intense black and higher legibility. Curved mineral glass and vulcanised rubber strap.

Movement: The Swiss precision of the Ronda 712.3 quartz movement, lubricated with oil bath.
Functions: Hours, minutes.
Case: stainless steel AISI 316L, completely filled with a special oil that emphasizes the dial, creating the illusion of the absence of glass, and an optical effect of a more intense black and higher legibility. Visible air bubble on the dial to compensate the temperature variations. Distinguishing crown on left side. Diameter 44 mm.
Back: Screwed in.
Dial: Black, numbers and indexes in beige colour, hands treated with beige superluminova.
Crystal: curvedmineral glass.
Water Resistance: 50 mt, 5 ATM

Strap: ultra-resistant vulcanised rubber, in black colour, personalised with the logo of the Maison in relief. Steel tongue buckle. Width 22/20 mm.