Longines Ultra-Chron Carbon Watch L2.839.4.52.2
High-Frequency Precision Meets Lightweight Innovation

The Longines Ultra-Chron Carbon is a bold statement in contemporary high-performance watchmaking, merging historic Ultra-Chron legacy with modern carbon and titanium construction. Engineered for those who demand precision and resilience, this certified chronometer boasts a cutting-edge high-frequency movement housed in a remarkably lightweight and durable case.

Key Features

• 43mm cushion-shaped case crafted from titanium and carbon for extreme strength with minimal weight

• Scratch-resistant sapphire crystal with multi-layer anti-reflective coating

• Water-resistant to 30 bar (300 meters) for robust aquatic performance

• Screw-in crown and screw-down case back enhance durability and seal integrity

Dial & Visibility

• Anthracite dial with applied hour markers

• PVD grey polished hands and Swiss Super-LumiNova® for exceptional low-light legibility

• Sleek, stealth-inspired look underscores its technical focus

Movement & Accuracy

• Caliber L836 high-frequency automatic movement

• Beats at 36,000 vibrations/hour—ensuring remarkable precision

• Monocrystalline silicon balance spring for enhanced magnetic resistance and stability

• 52-hour power reserve

• Chronometer-certified for timekeeping excellence under rigorous standards

Strap & Fit

• Black nylon strap built for durability and comfort

• Titanium buckle offers strength with a lightweight profile

• Lug width: 22 mm

• Lug-to-lug: 48.9 mm

• Case thickness: 14 mm

• Total weight: only 67 g—exceptionally lightweight for its class

A New Era of Ultra-Chron Performance

With a nod to Longines’ heritage of high-frequency innovation and a forward-facing design ethos, the Ultra-Chron Carbon stands at the intersection of precision, durability, and modern aesthetics. It’s a watch that doesn’t just keep time—it commands it.