Longines Zulu Time 1925: A Centennial Gold-Bezel GMT Under ,000

The Legacy of Zulu Time

Before standardized time zones, local solar time ruled, causing chaos for international travel and communication. In 1884, the Greenwich Meridian and 24 global time zones were established, giving birth to GMT. 'Zulu' comes from the NATO phonetic alphabet for 'Z', meaning zero offset from GMT, essentially synonymous with Greenwich Mean Time.

Longines has been a pioneer in multi-time-zone watches since the late 19th century. In 1908, they crafted the famous 'Turkish pocket watch' for the Ottoman Empire, the world's first dual-time-zone pocket watch. Then in 1925, they introduced the first dual-time-zone wristwatch, the Zulu Time, which displayed local and GMT simultaneously—a true ancestor of modern GMT watches.

The 2025 Centennial Edition

In 2022, Longines revived the Zulu Time line within the Spirit collection. For 2025, marking the 100th anniversary, they launched the Zulu Time 1925 series with three models. While two are 42mm with ceramic bezels, the standout is the 39mm steel reference L3.803.5.53.6, featuring an 18K rose gold-capped bezel—a nod to vintage elegance.

Why the Gold-Capped Bezel Matters

Gold-capping (or 'gold-filled') involves a thick layer of gold bonded to steel, offering more gold than simple plating. This bezel is bidirectional, with 24-hour markings and a fine brushed finish, allowing tracking of a third time zone—practical and stylish.

Dial Details and Design

The black dial features a gold-toned outer ring that echoes the bezel, with diamond-shaped luminous indices placed on it for added depth. Rose gold hands, central seconds, GMT hand, and Arabic numerals all match the bezel, coated with Super-LumiNova for legibility. The central seconds hand's diamond tip mirrors the indices.

At 6 o'clock, a date window sits beneath five gold stars—a nod to Longines' Admiral line from the 1960s—and a subtle '1925-2025' engraving commemorates the centenary.

Movement and Performance

Inside beats the L844.4 automatic movement, featuring double T-spring shock absorbers and a silicon hairspring. It offers anti-magnetic resistance up to 10 times the ISO 764 standard, a 72-hour power reserve, and COSC chronometer certification, ensuring accuracy within -4/+6 seconds per day.

The exhibition caseback reveals a gold-colored rotor engraved with a world map, surrounded by radial brushing and perlage on the plates—a beautiful sight.

Buying Tips

For replica watch enthusiasts, the Longines Zulu Time 1925 offers an affordable entry into luxury GMT watches with historical significance. When considering a replica, pay attention to the gold-capped bezel's weight and finish, the dial's sunburst effect, and the movement's decoration—details that separate good replicas from great ones. Always verify the authenticity of the COSC certification and the silicon balance spring, as these are key features.

This centennial edition is a limited celebration, making it a potential collector's piece. Its 39mm size suits various wrists, blending vintage charm with modern functionality. If you value heritage and practicality, this watch is a worthy addition.