IWC REF. 3789 FLIEGERUHR AUTOMATIC STEEL International Watch Co., Schaffhausen, "Fliegeruhr," case No. 5028368, Ref. 3789. Made circa 2012. Fine, self-winding, water-resistant, antimagnetic, stainless steel wristwatch with round button chronograph, registers, day and date and a stainless steel IWC link bracelet with deployant clasp. Two-body, brushed and polished, concave lugs, stepped bezel, screw down case back and crown, antimagnetic protection shield, sapphire crystal. Black with luminous Arabic numerals, baton and triangular indexes, subsidiary dials for the seconds, the 12- hour and 30-minute registers, outer minute/seconds track, apertures for the days of the week and the date. Luminous black lozenge hands. Cal. 79320, rhodium plated, oeil-de-perdrix decoration, 25 jewels, straight-line lever escapement, monometallic balance, shock absorber, self-compensating flat balance spring, index regulator, hack mechanism.