U-Boat Darkmoon Oil Immersion Men’s Black Watch

U-Boat Darkmoon Black PVD Ref. 8464/D is inspired by the dark side of the moon, delivering a deep and intense black aesthetic through U-Boat’s signature oil immersion technology, designed to enhance contrast and legibility.

Powered by the Swiss Ronda 712.3 quartz movement, lubricated in an oil bath, this model offers precise hours-and-minutes timekeeping. The oil-filled case creates the illusion of an absent crystal, while a visible air bubble compensates for temperature variations, reinforcing the Darkmoon’s distinctive technical character.

The 45mm stainless steel case with black PVD treatment is completely oil-filled to intensify depth and clarity, protected by a domed sapphire crystal and complemented by a left-positioned crown. Finished with a durable black vulcanised rubber strap and steel buckle, this Darkmoon delivers bold presence with unmistakable U-Boat identity.

Questions & Answers

• What defines the Darkmoon oil immersion design? The oil-filled case enhances dial depth, contrast, and legibility while creating the illusion of no crystal.
• What movement powers this watch? It uses the Swiss Ronda 712.3 quartz movement lubricated in an oil bath.
• Are the dial details luminous? Yes, the hands, numbers, and indexes are treated with beige Luminova.
• Is the battery easy to replace? Yes, the locking ring system allows quick battery replacement.
• Is it suitable for everyday wear? Yes, its robust construction and rubber strap make it ideal for daily use.