The Dark Moon 40mm brings the signature oil immersion concept into a smaller, more wearable dimension. Its stainless steel case, completely filled with oil, creates an optical illusion of infinite depth and crystal clarity, with the characteristic compensating air bubble marking its uniqueness. Compact yet bold, this watch captures the essence of innovation in a streamlined size.

Case size: 44 mm
Case material: Stainless Steel AISI 316L with PVD treatment, 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, quick battery replacement, engraved serial number
Dial: Blue metal with brushed soleil finishing, beige Super-LumiNova® hands and indexes, Polizia di Stato logo
Crystal: Domed sapphire
Strap 1: Black calf leather, hand-finished with blue stitching, 22/20 mm (Ref. 9179/Z), IPB steel buckle (20 mm, Ref. 1855)
Strap 2: Black vulcanized rubber, personalized with U-Boat logo, 22/20 mm (Ref. 8351/Z), IPB steel buckle (20 mm, Ref. 5467/SCREW IPB)
Water resistance: 50 m / 5 ATM

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.