Pre-owned Omega Speedmaster '57 Chronograph Automatic Mens Watch 331.20.42.51.02.001

Omega Speedmaster '57 Chronograph Automatic Silver Dial Mens Watch, Reference: 331.20.42.51.02.001. Features a stainless steel case with an 18kt yellow gold center link bracelet, fixed solid 18kt yellow gold bezel showing tachymeter markings, silver dial with luminous yellow gold-tone baton hands and index hour markers (outer minute ring). Equipped with luminescent-coated hands/markers for night readability. Includes date display at the 6 o'clock position. Chronograph function features two central sub-dials: one for measuring seconds up to 60 minutes, another displaying hours up to 12. Powered by Omega calibre 9300 automatic movement with a power reserve of approximately 60 hours and containing 54 jewels. Minute markers are present around the outer rim. Features include chronometer certification, tachymeter capability, hour, minute, second indicators, and is water resistant to 100 meters (approximately 330 feet). Round case measures 41.5 mm in diameter with a thickness of 16.5 mm. Secured by a fold over clasp with push button release mechanism. Sapphire crystal provides scratch resistance for the display face.