Longines Spirit Zulu Time Black Matt Dial Men 39mm L38035536

Commemorating a century of pioneering aviation dual-time instruments and paying homage to Longines’ historic 1925 Zulu Time pocket watch, the Longines Spirit Zulu Time 1925 39mm unites authentic pilot heritage with the warm prestige of precious metallurgy . Forged in an ergonomic 39.00 mm surgical-grade 316L stainless steel case crowned with a genuine 18-karat 5N rose gold cap (200 microns) on the bidirectional rotating bezel rim and fluted screw-in crown, this special anniversary reference features satin-brushed flanks and mirror-polished chamfers . The dial showcases a non-reflective matte black instrument finish, framed by applied rose gold-plated Arabic numerals, polished rose gold hands coated in Swiss Super-LumiNova®, and five applied gold stars—the historic symbol of Longines' highest-grade movements—alongside an arrow-tipped 24-hour GMT hand and a date window at 6 o'clock beneath a domed anti-reflective sapphire crystal . Powered by the exclusive in-house Calibre L844.4 mechanical automatic movement certified as an official Swiss Chronometer by the COSC (Contrôle Officiel Suisse des Chronomètres), it features true "flyer" independent local hour adjustment, an antimagnetic monocrystalline silicon balance-spring, and an extended 72-hour power reserve . Mounted on an articulated stainless steel link bracelet equipped with a tool-free quick-release interchangeable system and a double-safety folding clasp, it provides 100 metres (10 bar / 330 feet) of water resistance and is protected by an official 5-year Longines international warranty .

Key Highlights

• Historic "Zulu Time 1925" Heritage: Special edition celebrating 100 years since Longines debuted the world’s first dual-time wristwatch featuring the naval and aviation Zulu flag .

• Precious 18K Rose Gold Cap 200 Metallurgy: Solid 18-karat 5N pink/rose gold capping (200 microns thick) bonded to the bidirectional rotating bezel and screw-in crown .

• Exclusive Longines Calibre L844.4 Automatic: In-house Swiss mechanical movement featuring true "flyer" independent local jumping hour adjustment, 25,200 vph frequency, and a 72-hour power reserve .

• COSC-Certified Swiss Chronometer: Officially tested and certified by the Contrôle Officiel Suisse des Chronomètres for stringent timing accuracy across varied positions and temperatures .

• True "Flyer" GMT Travel Complication: Independent hour hand that jumps forward or backward in 1-hour increments without stopping the seconds or altering the home timezone hand .

• Ergonomic 39.00mm Case Proportions: Highly requested mid-size diameter engineered with a compact 46.80 mm lug-to-lug length for a balanced fit on diverse wrist sizes .

• Bidirectional 24-Hour Bezel: Navigational bezel ring with engraved 24-hour scale and a luminescent Super-LumiNova® triangle at 12 o'clock for multi-timezone tracking .

• Antimagnetic Silicon Balance-Spring: Monocrystalline silicon hairspring delivering high resistance to magnetic fields and superior long-term chronometric stability .

• Non-Reflective Matte Black Dial: Instrument-grade black dial face absorbing direct glare, complemented by warm rose gold typography and accents .

• Five Applied Gold Stars: Historic Longines symbol signifying the highest internal standards of movement quality, reliability, and precision.

• Domed Anti-Reflective Sapphire Crystal: Multi-layered anti-reflective coating on both inner and outer surfaces for maximum dial legibility from any cockpit angle .

• Solid Stainless Steel Link Bracelet: Ergonomic multi-link metal bracelet featuring brushed outer links and polished center segments with a quick-release strap changing system .

• Double-Safety Folding Clasp: Sturdy folding deployant buckle featuring dual push-piece release for reliable wrist retention .

• Robust 100-Metre Water Resistance: Tested to 10 bar (100 m / 330 ft) with a screw-in crown, offering complete security during swimming, recreation, and travel .

• Official 5-Year Longines International Warranty: Backed worldwide by Longines' 5-year guarantee provided for timepieces equipped with silicon balance technology .

Design & Craftsmanship

Aviation Dual-Time Heritage & The 18K Rose Gold Cap 200 Architecture

The Zulu Time collection traces its origin to 1925, when Longines created the first dual-time wristwatch featuring the "Zulu" flag—the universal nautical and aviation symbol for Greenwich Mean Time (Zero Meridian Time) . Reference L3.803.5.53.6 honors this century-old lineage in a refined 39.00 mm profile . Forged from surgical-grade 316L stainless steel, the case combines vertical satin-brushed flanks with mirror-polished chamfers . The bidirectional rotating bezel rim and knurled crown are encased in a solid 18-karat 5N rose gold cap 200 (a durable 200-micron layer of solid gold mechanically bonded over steel) . This warm precious-metal treatment provides the rich luster of solid rose gold while retaining the structural durability of surgical steel .

Matte Black Dial Depth, Rose Gold Accents & Cockpit Legibility

The dial architecture prioritizes high-contrast cockpit legibility, balanced symmetry, and warm vintage luxury . Treated with a fine-grained matte black finish, the dial absorbs incoming light to prevent stray glare under direct cockpit illumination . Applied 18K rose gold-plated Arabic numerals line the hour ring, paired with matching rose gold hands generously filled with Swiss Super-LumiNova® . A black-stemmed GMT hand with a rose gold-toned arrow tip sweeps across the 24-hour bezel, while a date aperture sits symmetrically at 6 o'clock beneath the five applied gold stars . Applied diamond indices on the outer minute chapter track reinforce vintage aviator instrument design .

COSC-Certified Calibre L844.4 Engineering & Quick-Release Steel Bracelet

Operating beneath the solid steel screw-down case back—embossed with the iconic Longines winged hourglass and globe emblem—beats the exclusive Calibre L844.4 . Operating at 25,200 vibrations per hour (3.5 Hz) with 21 synthetic ruby jewels, this mechanical self-winding movement is certified as a Swiss Chronometer by COSC . Fitted with an antimagnetic monocrystalline silicon balance-spring, the calibre resists modern electromagnetic fields from laptops, phones, and travel equipment while delivering a weekend-proof 72-hour power reserve . The watch is paired with a solid 316L stainless steel multi-link bracelet engineered with an interchangeable quick-release mechanism, allowing the wearer to swap bracelets for leather or NATO straps without tools . The bracelet is fastened by a double-safety folding clasp with push-piece release .