A. Lange & Söhne, model: 1 320.032 18k rose gold case diameter: 39.5mm automatic mechanical Case: 18K rose gold, 38.5mm classic first-generation LANGE 1 diameter, 9.8mm thick; The independent day of the week adjustment button on the left and the signature vertical onion crown on the right. 2. Dial (Brand signature off-center layout) ◦ Upper right eccentric hour and minute dial: Roman numeral hour markers, silver guillose-textured base plate; ◦ Double-window patent calendar on the upper left (Lange's core identification feature); The leftmost day of the week chart: German day of the week abbreviation M / T / W / T / F / S / S; ◦ Independent small seconds dial at the lower left; The dial is engraved with "WOCHENTAG-AUTOMATIK", which means automatic watch for the day of the week. 3. Strap: Brown matte crocodile leather, original rose gold pin buckle; Water-resistant to 30 meters, only suitable for daily commuting. Instruction Manual for the card protection box.