Automatic chronometer movement (bitting at 28,800 vph / 4Hz), black dial with luminous hands and index markers including minute and slide rule graduations. Bi-directional rotating bezel, date display at the 6 o'clock position, three sub-dials for seconds, minutes, and hours chronograph functions, stainless steel case and bracelet, sapphire crystal glass, power reserve of approximately 70 hours, water resistance to 30 meters / 100 feet.