Omega Speedmaster ’57 models are powered by the OMEGA Co-Axial calibres 9300/9301 – the first of OMEGA’s exclusive in-house Co-Axial calibres to incorporate a chronograph function. The column-wheel chronograph has 12-hour and 60-minute counter hands placed on the same sub-dial at 3 o’clock. This familiar arrangement of the hands, which recalls the hour and minute hands on the main dial, enables intuitive reading of the chronograph. It also has a central chronograph seconds hand, a small seconds hand on the sub-dial at 9 o’clock and a date window at the 6 o’clock position.
The replica Omega Speedmaster ’57 has been created with a 41.50 mm case available in a choice of metals, including 18K red or yellow gold, lightweight titanium, a fashionable bicolour blend of 18K red gold and stainless steel or in classic stainless steel. Each model is presented with either a matching bracelet or a stylish leather strap.
The two chronograph control pushers function totally independently – accordingly, there is no risk to the chronograph mechanism as a result of inadvertent manipulation. The Co-Axial calibres 9300/9301 are also equipped with a silicon balance spring. Silicon is non-magnetic so it is not influenced by magnetic fields. This quality combined with the excellent resilient coefficient of silicon allows the balance springs, which are etched on a silicon wafer, to deliver improved chronometric performance. Silicon also has a very low fatigue influence and ages slowly. The outstanding reliability delivered by the combination of Co-Axial technology and the silicon balance spring is such that OMEGA delivers its Co-Axial watches equipped with silicon balance springs with a full four-year warranty.
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