A. Lange & Sohne Style No: 740.036FEA. Lange & Söhne Datograph Perpetual Tourbillon - 41.5mm Platinum Case - Black Dial - Black Strap
41.5 mm platinum case, 14.6 mm thick, black rhodié solid silver dial, calibre L952.2 manual winding movement with chronograph, moonphase, outsize-date and tourbillon, approximately 50 hours of power reserve, black strap.