IWC Calypso Aquatimer Costeau Day Date Automatic Watch IW378203 METAL: Stainless Steel. MEASUREMENTS: Case 44mm, full size rubber original bracelet with steel buckle. Blue dial with day date window at 3 o'clock, 3 register chronograph. MOVEMENT: Automatic, working order. Red. IW378203, ser # 3440315. Comes with COA card. Circa 2012. Watches are guaranteed to be in running order, if described as such, at the time of listing only. Watches have not been tested for features functionality, unless otherwise stated in description.