U-Boat Watch Darkmoon SS/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.  

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