Replica Seiko Dress Steel Black Ladies Watch SUJD39 Twin-barrel system. Double-cone system on Power-reserve indicator to enhance precision. Two balance springs placed perpendicular to each other. The newly patented escapement has been in development for over 6 years and uses direct implusion thereby eschewing the need for the traditional lever escapement. In the case of the new escapement, energy is transmitted directly to the balance improving conservation of energy. This masterpiece is shock resistant and requires absolutely no lubrication. Jules Audemars and Edward Piguet were both in their early twenties when they founded Audemars Piguet in 1875. In 1972 AP launched a line of mechanical watches with hexagonal screws that fastened a porthole-like bezel. Thus was born the Royal Oak, in honor of the British Royal Navy's line of ships bearing the same name. The Royal Oak is among many of the most specialized and complex watches produced by this famous manufactory.