Longines has been timing aviators since before flight was a reliable enterprise. Their involvement with navigational timekeeping stretches back to the 1910s, culminating in the Hour Angle Watch developed with the New York Institute of Navigation in 1931 - a tool that let pilots calculate their longitude using the sun and a precise chronometer. Zulu is NATO phonetic for UTC, the universal time reference aviation has used since the 1950s. This anniversary edition marks a century of dual-timezone watchmaking at the brand and arrives with a bidirectional bezel finished in 18ct rose-gold plate over stainless steel - restrained in execution, historically grounded. The movement is COSC-certified Calibre L844.4: a true GMT that lets the local hour hand adjust independently without stopping the watch. 39mm case. 72-hour power reserve. Silicon balance spring. Ships with both a steel bracelet and a NATO strap. At £3,750, the value calculation for a Swiss-made COSC GMT at this level of provenance is unusually straightforward.
£3,750 - longines.com