A. Lange & Söhne 730.032
A. Lange & Söhne,1815 series, model: 730.032, Tourbillon, 18K rose gold material, diameter 39.5mm, silver-white dial, Arabic numeral hour markers, 6 o 'clock tourbillon function, 72-hour power reserve, transparent case back manual mechanical movement, gooseneck fine adjustment movement, folding clasp