Swiss made, automatic, 32 mm/4.97mm, 367 parts, 29 jewels, perpetual calendar with day/night indication, 45-hour power reserve, 21K gold unidirectional rotor, Gyromax® balance wheel, Spiromax® balance spring, 4Hz (28,800 vph). Geneva stripes on the bridges, beveled and chamfered edges, perlage on the mainplate, Patek Philippe Seal.