Stainless steel case and bracelet. Mother-of-pearl dial with silver subdials. Chronograph measures 1/4th second, 30 minutes, and 12 hours. Dial aperture calendar displays date at 3 o'clock position. Unidirectional ratcheted bezel. Minimum 42 hour power reserve. Screw-locked crown with two gaskets. Screwed-in case back. Cambered sapphire crystal, glareproofed both sides. Deployment clasp. Case diameter 39mm. Case thickness 16.10mm. Automatic movement. Water resistant at 100 meters (330 feet).