IWC4  IWC Spitfire Chronograph Fliegeruhr. Reference IW370623. Watch measures a beautiful 39mm and is made from steel. Automatic IWC movement caliber 30110 based upon the mighty Valjoux 7750 movement. Sapphire crystal on the front and a closed case back. Waterproof 6ATM or 60 meters. Functions are hours, minutes, sub seconds, chronograph, day and date. This watch is fitted with the original black leather strap with steel pin buckle. Naturally this watch is complete with the original box and papers dated April 2004. Fantastic and sought after Fliegeruhr in mint condition except for the strap. SOLD