The U-Boat Chronograph 45mm pushes the boundaries of innovation with its oil-immersed electro-mechanical movement, delivering unmatched precision and a striking optical effect that makes the dial appear glassless. Designed with Italian boldness and Swiss engineering, this timepiece combines durability, legibility, and cutting-edge chronograph functions in a robust 45mm stainless steel case.

Case size: 45 mm
Case material: Stainless Steel AISI 316L, oil-filled with compensating air bubble
Movement: Swiss electro-mechanical, U-Boat customized
Functions: Hours, minutes, seconds, chronograph, screw crown
Back: Locking ring system with quick battery replacement, engraved QR code
Dial: Two-layer black with beige Super-LumiNova® hands & indexes
Crystal: Curved sapphire
Strap: Black vulcanized rubber, 22/20 mm with tongue buckle
Water resistance: 100 m / 10 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.