A.Lange & sohne, Saxonia series, models: 215.026, 216.026, manual mechanical movement, 18k white gold, diameter: 37MM Bauhaus minimalist style: White dial with Roman hour markers and dot-shaped hour markers, off-center small seconds dial at 6 o 'clock. It is a classic German dress watch design with clean and elegant lines, suitable for business wear. 2. 18K white gold case: Cold-toned silver-white from precious metals, not prone to oxidation and yellowing, with a superior texture compared to steel models, positioned as a high-end collectible dress watch. 3. Ultra-thin body: With a thickness of 7.3mm, it can be easily tucked into the sleeve of a shirt and is an early classic small-diameter men's model from Saxon. Iii. Core Configuration of the Movement (Signature Craftsmanship of German Watches) The base plate of the movement is unpolished German silver. The three-quarter plate, blue steel screws and gold sleeves are the signature craftsmanship of Lange. The base plate is hand-engraved and polished. • 21 gemstone bearings, 5-direction calibration, vibration frequency 21,600 times per hour, power reserve approximately 46 hours; The transparent back cover allows for a direct appreciation of the aesthetic finishing of the traditional German manual movement. Single table.