Omega Speedmaster Series Racing chronograph Watch 44.25mm to the Observatory Chronograph Model: 329.30.44.51.06.001 In 1957, Omega launched the Speedmaster series designed specifically for motor sports, which is also known as the "Racing dials racing disc" gray panda disc. Two small dials with black rings and a 6 o 'clock position calendar window are integrated into the dial. Black or orange bright paint hands and black arrow hour scales are covered with white Super-LumiNova luminous coating diameter 44.25mm Equipped with Type 9900 to the Observatory double T movement Frequency: 28800 oscillations per hour Power Storage: 60-hour steel case strap, arched double-sided anti-reflective anti-wear glass no problem with the racing style, at a glance, people are intoxicated, as if you are on the track to experience the passion brought by speed.