Case Material: 18K White Gold Case Size: 45.9mm Dial: Solid silver, rhodié (silver-gray) finish with outsize date and power reserve indicator Strap: Hand-stitched dark brown alligator leather with 18K white gold folding clasp Movement: Manual winding, in-house Lange calibre L034.1 Functions: Hours and minutes Small seconds Outsize date Power reserve indicator (31 days) Power Reserve: 31 days (744 hours) via twin mainspring barrels Winding Mechanism: Proprietary key-winding system (winding key included with watch) Crystal: Scratch-resistant sapphire crystal (front and caseback) Water Resistance: 30 meters Reference Number: Typically 130.025 (verify with specific edition) Special Features: Longest power reserve in A. Lange & Söhne’s lineup Constant-force escapement ensures consistent timekeeping throughout power reserve Hand-finished German silver movement visible through display back Technically sophisticated and extremely rare—produced in very limited quantities Made in: Germany
