Pre-owned Zenith Defy El Primero 21 Chronograph Automatic Mens Watch with article number 49.9000.9004/78.M9000. Features a black ceramic case and bracelet, fixed black ceramic bezel, black skeletal dial with luminous dark grey ruthenium-plated hands and index hour markers including minute markers and 1/100th second markers around the outer rim. Analog dial type with luminescent elements for hours and minutes. Equipped with three sub-dials displaying a power reserve indicator, 60 seconds, and 30 minutes. Powered by Zenith Calibre El Primero 9004 automatic movement containing 53 jewels operating at 36000 vph (1/100th second function), offering approximately 50 hours of power reserve. Features a scratch-resistant sapphire crystal, deployment clasp with push button release for the bracelet, transparent case back, and is water resistant to 100 meters / 330 feet.