Longines Ultra-Chron Automatic – L2.537.4.72.6

The Longines Ultra-Chron Classic Automatic (Ref. L2.537.4.72.6) captures the spirit of timeless precision and refined design. Crafted in stainless steel, this 37mm timepiece embodies the heritage of Longines’ high-frequency expertise with a self-winding mechanical movement that beats at an impressive 36,000 vibrations per hour. Powered by the Caliber L836, it features a monocrystalline silicon balance spring for enhanced accuracy and offers a power reserve of up to 52 hours.

The sunray silver dial radiates elegance, complemented by applied indexes and polished silvered hands that reflect the brand’s dedication to detail. A scratch-resistant sapphire crystal with multiple layers of anti-reflective coating on both sides ensures clarity from every angle. The round case, measuring 10.95mm thick with a 19mm lug distance and 44.6mm lug-to-lug length, offers both comfort and sophistication on the wrist.

Built for everyday durability, the Ultra-Chron Classic is water-resistant up to 50 meters, providing confidence in any setting. Completing the design, a stainless steel bracelet with a double-security folding clasp and micro-adjustment system ensures a perfect, secure fit.

The Longines Ultra-Chron Classic stands as a modern interpretation of one of the brand’s most celebrated high-frequency models, blending technical mastery with understated style—a true expression of Longines’ watchmaking excellence and timeless appeal.