Item number: 1819.51.91 Brand: Omega Style Number: 1819.51.91 Also Called: 18195191 Series: Constellation Double Eagle Chrono Style: Mens Case: Stainless Steel Dial Color: Black Watch Bracelet / Strap: Rubber - Black Watch Clasp: Push Button Foldover Movement: Automatic Co-axial C.O.S.C. Engine: Omega Caliber 3313 Functions: Hours, Minutes, Small Seconds, Date, Chronograph Crystal: Sapphire - Glareproofed, scratch-resistant Case Diameter: 41.0 mm Case Thickness: 14.5 mm Caseback: Stainless Steel Bezel Material: Aluminum, PVD-coated Bezel Function: Fixed Water Resistance: 100m / 330ft (suitable for swimming and shallow snorkeling; unsuitable for diving) Crown: Stainless Steel Calendar: Automatic Date at 6 o'clock Power Reserve: 55-hour power reserve Additional Info: NEW Co-Axial Escapement.

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