The Lange 1815 is a luxury watch made by the German watch manufacturer A. Lange & Söhne. It is named after the birth year of the brand's founder, Ferdinand A. Lange. The 1815 collection was first introduced in 1996, and it is inspired by the historical pocket watches made by the brand in the early 19th century. The Lange 1815 features a timeless and classic design, with a sleek and elegant case, and a traditional dial layout. It has a variety of complications such as power reserve indicator, moon phase and chronograph functions. The Lange 1815 collection includes various models, each timepiece has its own unique features, but all of them embody the brand's commitment to precision, craftsmanship, and attention to detail.