Meet A. Lange & Söhne Zeitwerk (ref. 140.049), a contemporary classic shaped by careful watchmaking know-how. The exterior is thoughtfully executed: crafted in white gold and measuring 41.9 mm in diameter, with a thickness of 12.6 mm. The caseback is open, and the crystal is sapphire. At a glance, the dial balances texture and clarity: a grey tone, framed by arabic numerals hour markers. At its heart beats a proven engine: the L043.1 caliber. Issued as a limited edition, appealing to focused collectors. Initial production year: 20112011. With considered ergonomics, it feels composed during extended wear. Brushed and polished elements play with light to emphasize crisp geometry. For buyers researching specifications and real-world impressions, this reference stands out for coherent design, dependable mechanics, and lasting relevance within modern horology.