A. Lange & Söhne Lange 1 130.039F
Ref. 130.039F
in 18-carat white gold
The LANGE 31 is a groundbreaking timepiece, being the world's first mechanical wristwatch with an impressive 31-day power reserve and a patented constant-force escapement. This limited edition model, restricted to 100 pieces and available exclusively in Lange boutiques, features a sophisticated grey dial made from solid silver set in an 18-carat white gold case. Measuring 45.9 mm in diameter and 15.9 mm in thickness, it commands a striking presence. The manually wound L034.1 movement, composed of 406 meticulously crafted parts and operating at 21,600 semi-oscillations per hour, ensures a remarkable 744-hour power reserve. Its complications include an outsize date, constant-force escapement, and power-reserve indicator. With a sapphire glass case back and 3 bar water resistance, the LANGE 31 exemplifies unparalleled innovation and masterful craftsmanship.