Steel IWC Aquatimer Chronograph "Expedition Jacques-Yves Cousteau" IW3768-05. 44mm case diameter, water resistant to 300 meters. Automatic Chronograph movement, Blue dial with uni-directional bezel. Applied luminescent index hour markers and Luminescent hands. Chronograph function (blue sub-dials): Large central seconds counter hand; 30 minute counter at the 12 o'clock position; 12 hour counter at the 6 o'clock position; Small seconds sub-dial located at the 9 o'clock position with orange hand. Day & Date windows located at the 3 o'clock position. 44 hour power reserve. Sapphire crystal glass. Jacques-Yves Cousteau engraving on case back. Black Rubber strap with steel buckle. Box and Papers dated September 2015.