TECHNICAL DATABrand: U-BoatFamily: DARKMOONReference: 8700/DName: U-Boat Men’s 8700/D Darkmoon Blue IPB Soleil QuartzCASEMaterial: SteelGlass: Sapphire GlassDiameter: 44 X 44Case Thickness: 0Water Resistance: 5 ATMDIALColor: BlueDial Markers: Arabic numeralsBezel: Stainless SteelMOVEMENTType: QuartzCalieber: QuartzBase Caliber: Ronda 712.3BANDMaterial: RubberColor: SteelWidth: 22/20mmClasp: Fold claspOTHER FUNCTIONSLuminescent Hands,Luminous indexes ,PVD/DLC coating ,Screw-Down Crown ,