Discover A. Lange & Söhne's precision with the Lange 1 (ref. 139.021), a refined timepiece that blends thoughtful design with reliable performance. A study in proportion and durability: crafted in yellow gold and measuring 41 mm in diameter, with a thickness of 9.5 mm, defined by a round silhouette. The caseback is open, and the crystal is sapphire. The dial composition is deliberate and legible: a champagne tone, executed in silver, framed by mixed hour markers, and alpha hands. Beneath the caseback lies dependable performance: the L095.3 caliber. Initial production year: 2014. Comfort and balance define the wearing experience, making it an easy daily companion. Subtle transitions between textures elevate the overall impression. For buyers researching specifications and real-world impressions, this reference stands out for coherent design, dependable mechanics, and lasting relevance within modern horology.