TECHNICAL DATABrand: U-BoatFamily: DARKMOONReference: 9552Name: U-Boat Men’s 9552 Darkmoon 40 mm Curved Dial WatchCASEMaterial: SteelGlass: Sapphire GlassDiameter: 40 X 0Case Thickness: 0Water Resistance: 5 ATMDIALColor: BlackDial Markers: Arabic numeralsBezel: Stainless SteelMOVEMENTType: QuartzCalieber: Ronda 762Base Caliber: –BANDMaterial: RubberColor: BlackClasp: BuckleOTHER FUNCTIONSCrown Left ,Luminescent Hands,Luminescent Numerals,Luminous indexes ,Screw-Down Crown ,