CASE Stainless steel case Diameter 40.0 mm Height 11.0 mm Screw in crown Water resistance 6.0 bar MOVEMENT 30110 Calibre Automatic, self-winding 42 hours Power Reserve Frequency 28800.0 VPH (4.0 Hz) 163 Components 21 Jewels FEATURES Central hacking seconds Sapphire glass, convex, antireflective coating on both sides Glass secured against displacement by drop in air pressure Date display Soft-iron inner case for protection against magnetic fields DIAL STRAP Black calfskin strap by Santoni Strap width 20.0 mm Brushed stainless steel case with polished beveled corners & crown. Matte black dial. Hour markers: Arabic numeral with a bold luminous triangle at the 12 o'clock position. Bold printed minute & hour track with luminous quarter-hour markings. Black hour & minute hands with luminous fill. White central seconds hand. Date window located at the 3 o'clock position. IWC Caliber 30110, beats at 28,800 vph, contains 21 Jewels & has an approximate power reserve of 42 hours. Features an inner soft-iron case for additional protection against magnetic fields. Alternate model # iw3270-01 3270-01 327001 Condition New/Unworn Case Shape Round Case Dimensions 40mm Case Thickness 11mm Case Material Stainless Steel Dial Color Black Crystal Scratch Resistant Sapphire Bezel Fixed Screw-in Crown Yes Water Resistance 60m/195ft Case Back Solid Band Material Calfskin Leather Color/Finish Black Band Notes by Santoni Clasp Tang Buckle Movement Automatic