The Omega Speedmaster Professional Moonwatch White Dial 42mm steel 310.30.42.50.04.001 is a mechanical timepiece, featuring Omega's Co-Axial Master Chronometer Calibre 3861. This Speedmaster Professional model is suited for daily wear, its robust construction and classic design complementing both formal and casual attire. The steel bracelet offers secure fitting, while the white dial ensures legibility. It presents a considered choice for horology enthusiasts. Key details Brand: Omega Type: Mechanical watch Calibre: OMEGA 3861 Case Material: Steel Diameter: 42 mm Dial Colour: White