MOVEMENT Swiss precision of the Ronda 762 quartz movement, lubricated in oil bath. FUNCTIONS hours, minutes, screw-down crown. CASE Made of AISI 316L stainless steel with a bronze PVD treatment, completely filled with a special oil that enhances the dial, creating the illusion of the absence of glass, with a deeper brown effect and increased legibility. Visible air bubble on the dial to compensate for temperature variations. Protective crown guard on the left. Diameter: 40mm. BACK innovative locking system (Locking Ring System) with quick battery replacement. Scanning the QR code grants access to an exclusive digital experience. DIAL Curved brown-painted metal dial, polished black indexes and numbers. CRYSTAL high-quality curved sapphire crystal. WATER RESISTANCE 50 mt, 5 ATM. STRAP highly durable vulcanized rubber strap, black in color, personalized with the Maison logo in relief. Width: 22/20 mm.  We are an Authorised Retailer of U-Boat. We will stamp the Official Warranty Card on the Date of Purchase.