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

This special edition is powered by a Swiss Ronda 712.3 quartz movement lubricated in an oil bath, ensuring precision and long-lasting performance. The stainless steel case with black PVD treatment is fully oil-filled to enhance dial clarity and depth, with the signature compensating air bubble. The model comes with two straps: a hand-stitched black calf leather strap with blue contrast stitching, and an additional vulcanized rubber strap personalized with the U-Boat logo. A quick battery replacement system via the Locking Ring caseback ensures practical functionality.

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.