Automatic, Self-winding Caliber 79320 in a stainless steel case 44mm. Black Rubber Strap With IWC-Patented Quick-Change System. Chronograph Function With Hours, Minutes, And Seconds. Mechanical External/Internal Rotating Bezel With Safedive System. Day And Date Display, Sapphire Glass, Convex, Anti-reflective Coating On Both Sides, Small Hacking Seconds. Box & Cert Dated Nov 2016, Local Boutique.