What significant feature did the Breitling introduced in 1934?

The introduction of the independent second pusher by Breitling in 1934 is significant because it marked a pivotal advancement in chronograph watch technology. This feature allowed for the precise measurement of time intervals independent of the main time setting. The independent second pusher enabled users to start, stop, and reset the chronograph function separately from the timekeeping function. This innovation enhanced the functionality of the watch, making it more useful for pilots and others who required accurate timekeeping and timing of events.

By refining the mechanics of chronographs, Breitling solidified its reputation as a leader in precision timing instruments, particularly in aviation contexts, where accurate timing can be critical. This innovation contributed to the brand's legacy and ongoing dedication to high-performance, multifunctional timepieces.