A. Lange & Söhne Zeitwerk 140.029

A. LANGE & SÖHNEZEITWERK

A. LANGE & SÖHNE. AN INNOVATIVE 18K WHITE GOLD WRISTWATCH WITH DIGITAL TIME DISPLAY AND POWER RESERVE INDICATION ZEITWERK MODEL, REF. 140.029, CASE NO. 194'853, CIRCA 2007 Details **A. LANGE & SÖHNE. AN INNOVATIVE 18K WHITE GOLD WRISTWATCH WITH DIGITAL TIME DISPLAY AND POWER RESERVE INDICATION** ZEITWERK MODEL, REF. 140.029, CASE NO. 194'853, CIRCA 2007 **Movement** : Manual **Dial** : Black **Case** : 42 mm. diam. **With** : 18k white gold A. Lange & Söhne buckle, Guarantee dated 2007, Wempe Guarantee dated 2007, leather folder, product literature, presentation box and outer packagingThe Zeitwerk, one of A. Lange & Söhne's most celebrated timepieces, is a powerful representation of the company's unwavering commitment to innovation and movement quality. The Zeitwerk, which debuted in 2009, was the first mechanical wristwatch to show the time digitally. Its large apertures and instantaneous jumping hour and minute indication made it incredibly readable. To propel the simultaneous motion of three discs, the movement must produce an astounding amount of energy that dominates the entire case. The regulating organ and the digital displays can function with perfect precision thanks to a patented constant-force system that guarantees enough torque is delivered consistently.