Omega 911

The Omega Caliber 911 is a highly specialized manual-wind chronograph movement developed in 1971, primarily for the second generation of the iconic Omega Flightmaster pilot’s watch (e.g., ref. 145.026 and 145.036). It is a direct evolution of the Caliber 910 and part of the famous Caliber 861 family, which itself is Omega’s designation for the Lemania 1873. The 911 was created to address feedback from pilots on the original Flightmaster (which used the Cal. 910); the 24-hour AM/PM indicator at 9 o’clock was replaced with a more conventional running small seconds hand, allowing the wearer to see at a glance that the watch was operational. The Caliber 911 retained the Flightmaster’s signature features, making it one of the most function-packed movements of its era: a full 12-hour chronograph, plus an independent, blue-colored 12-hour hand for tracking a second time zone (GMT). With seven hands in total, it was a mechanical powerhouse designed for professional aviators.