Case material: Steel; Charge: Manual; Conditions: New Presentation condition : With dealer guarantee ; Model: Speedmaster Professional Price on request Gmtbroker Reference: 3876.50.31 Omega 3876.50.31 Complete Details: Stainless steel case Black leather strap Black dial and Black Bezel Date & Moon Phase indicators at 12 Chronograph Functions Manual Wind Movement 48 Hours Power Reserve. Featured Complications: Moonphase This watch is also known as 38765031