Stainless steel case, Automatic, self-winding, Diameter 43.0 mm, Black dial,Black dial with luminescence, Black calfskin strap , Strap width 21.0 mm. Made in Schaffhausen, Switzerland. CASE Stainless steel case Diameter 43.0 mm Height 15.4 mm Screw in crown Water resistance 6 bar MOVEMENT 79320 Calibre Automatic, self-winding 44 hours Power Reserve Frequency 28800.0 vph (4.0 hz) 240 Components 25 Jewels Côtes de Genève, perlage FEATURES Chronograph function with hours, minutes and seconds Soft-iron inner case for protection against magnetic fields Day and date display Glass secured against displacement by drop in air pressure Sapphire glass, convex, antireflective coating on both sides Small hacking seconds IWC Big Pilot's Watch Chronograph Automatic 43 mm watch. Model reference: IW377709. Stainless steel case. Black dial. Automatic movement. Black calf leather strap. This new authentic watch comes in original packaging with full set of documents and 2 years warranty. Brand IWC Reference IW377709 Also known reference: IW-377709, 377709 Delivery Option/Leading On request Condition New (Original Box & Papers) Warranty 2 years Country of Manufacture Switzerland Case material Steel Case size (mm x mm) 43 mm Case Shape Round Thickness (mm) 15.2 mm Case Back Solid Waterproof 60 meters / 6 ATM Dial Black dial with luminescence Movement Automatic Movement Calibre IWC 79320 calibre Power Reserve (h) 44 hours when fully wound No. of Jewels 25 Jewels Frequency 28'800 vph, 4 Hz Strap material Calfskin leather Clasp (Buckle) Pin Buckle