The 1930s was a period of spectacular progress in aircraft performance and led to the introduction of long-distance flights. Several pilots set records while wearing an Oyster. Others used a Rolex watch as an on-board chronometer, such as Owen Cathcart-Jones and Ken Waller, who, in 1934, made a return voyage from London (United Kingdom) to Melbourne (Australia) in record time with a twin-engine De Havilland Comet.