Case size: 41.5 mm
Case material: Stainless Steel AISI 316L, oil-filled with compensating air bubble
Movement: Swiss Ronda 712.3 Quartz, oil-bath lubricated
Functions: Hours, minutes, screw-down crown
Caseback: Locking Ring System with engraved serial number, quick battery replacement
Dial: Black painted metal with beige Super-LumiNova® hands, numbers, and indexes
Crystal: High-quality curved sapphire
Strap: Black vulcanized rubber, 20/18 mm, quick-release system, personalized with U-Boat logo (ref. 3991/Z), steel tongue buckle (ref. 7019/SHINY/MAT)
Water resistance: 50 m / 5 ATM

Powered by the Swiss Ronda 712.3 quartz movement lubricated in an oil bath, this timepiece combines precision with avant-garde engineering. The Locking Ring System allows quick battery replacement, while the domed sapphire crystal ensures maximum durability. Completed with a black vulcanized rubber strap and IPB-treated buckle, the Dark Moon PVD embodies innovation, strength, and unmistakable style.

Watch Care Instructions:

Clean regularly with a soft, dry cloth.

Avoid contact with chemicals, solvents, or perfumes.

Keep away from extreme temperatures and magnetic fields.

Ensure the crown is fully pushed in or screwed down before exposure to water.

Store in a dry, cool place or in a watch box when not in use.