The LANGE 31 is an exceptional achievement in mechanical watchmaking, distinguished by its unprecedented 31-day power reserve and patented constant-force mechanism. Encased in 950 platinum, this imposing timepiece measures 46 mm in diameter and 15.9 mm in thickness and features a refined silver-colored dial crafted from solid silver. Powered by the manually wound L034.1 manufacture movement, comprising 406 parts, it delivers an extraordinary 744-hour power reserve and operates at a balance frequency of 21,600 semi-oscillations per hour. The movement incorporates two mainspring barrels and a patented constant-force escapement to ensure a consistent energy supply throughout the watch's extended running time. Notable functions include the outsize date, power-reserve indicator, subsidiary seconds, and constant-force mechanism, making the LANGE 31 a remarkable expression of technical innovation and haute horlogerie.
A. Lange & Söhne Lange 31 - 46 MM - Platinum - Silver Dial - 130.025F
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