Item number: 3159.50.00
Brand: Omega
Style Number: 3159.50.00
Also Called: 32150425002001
Series: Speedmaster Broad Arrow
Style: Mens
Case: 18k Rose Gold
Dial Color: Black
Watch Bracelet / Strap: 18k Rose Gold
Watch Clasp: Deployant twin-button safety clasp
Movement: Automatic Co-axial
Engine: Omega 3303
Functions: Hours, Minutes, Small Seconds at 9, Date, Chronograph
Watch Chronograph: 30 minute totalizer at 3 o'clock, 12 hour totalizer at 6 o'clock. 
Crystal: Sapphire - Scratch-resistant, domed, anti-reflective, multi-layered
Case Diameter: 42.0 mm
Case Thickness: 13.5 mm
Bezel Material: 18K Rose Gold
Bezel Function: Fixed (with Tachometric scale)
Water Resistance: 100m / 330ft (suitable for swimming and shallow snorkeling; unsuitable for diving)
Crown: Screw-down fluted & protected crown
Calendar: Automatic Date at 6 o'clock
Power Reserve: 52-hour Power Reserve
Watch Bracelet Length: 8.0 inches
Watch Bracelet Width: 20.0 mm