IWC Pilot's Double Chronograph 44mm Black Ceramic IW378601 WMLPP7 44 mm ceramic matte black case, the crown and buttons are made of titanium, Arabic numerals, indices and hands are luminescent white. Black dial, anti-glare coated crystal. Vertical three-day display. Automatic movement, 79230 caliber, 44 hours power reserve. The button at 10 o’clock enables the wearer to record intermediate times. Functions: hours, minutes, small seconds, date, split-second chronograph.