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  • A. Lange & Söhne

    Lange 31

    Reference# 130.032
    Manufacturer's retail price: $140,500.00
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    • Details
    • Description
    • Case: 18-karat rose gold
    • Size: 45.9mm
    • Movement: key-wound manufacture caliber L034.1
    • Function: big date, power reserve
    • Power Reserve: approximately 31 days
    • Dial: silver
    • Caseback: sapphire crystal
    • Strap/Bracelet: hand-stitched crocodile

    The world's first mechanical wristwatch with a power reserve of 31 days and a constant-force escapement that powers the going train with constant torque delivery. The tremendous amount of energy needed to keep the watch running so long is transferred to the movement with a winding key and stored in a twin mainspring barrel.

    A.Lange&Söhne
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