Case Material: 18K White Gold Case Size: 38.5mm Dial: Solid silver, typically in argenté (silver), black, or grey depending on the variant — featuring the iconic off-center time display Strap: Hand-stitched black or dark brown alligator leather with 18K white gold tang buckle Movement: Manual winding, in-house Lange calibre L121.1 Functions: Off-center hours and minutes Small seconds Outsize date (Lange's patented big date display) Power reserve indicator (Auf/Ab) Power Reserve: Approximately 72 hours Crystal: Scratch-resistant sapphire crystal (front and caseback) Water Resistance: 30 meters Reference Number: Often 191.039 for white gold with argenté dial (may vary depending on the dial color) Special Features: Signature Lange 1 asymmetric dial layout Finely hand-decorated German silver movement visible through sapphire caseback Classic design combined with modern horological precision A flagship model representing A. Lange & Söhne's identity and design language Made in: Germany
