A.Lange & Sohne "Pour le Mérite" series of the fifth masterpiece collection sesame chain drive system, tourbillon, chronograph, chronograph function and calendar five complex functions. The combination of these complex devices makes TOURBOGRAPH PERPETUAL "Pour le Mérite" incarnate into an unparalleled watchmaking masterpiece. Extremely complex chronographs and related functional interactions have always been an important skill in the Saxon A.Lange & Sohne watch factory. In addition to the two timing buttons on the outside of the crown, the third button at 10 o'clock also quotes TOURBOGRAPH PERPETUAL "Pour le Mérite" in the top chronograph. The wearer can appreciate the fascinating function of the chasing device through the sapphire crystal base cover. Two pillars are precisely controlled by 18K gold chronograph pointer and blue steel chasing needle. In the complete rotation of a circle, 9 o'clock position of the 30-minute sub-disc can be repeated as many times the time.Cheap
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A.Lange & Sohne is committed to the development of mechanical movement intelligent power management system to compensate for the inevitable loss of the main barrel torque, the results include three different constant power escapement system, and in 1994 for the first time on the watch Of the sesame chain drive system. "Pour le Mérite" in the name of the Prussian era of outstanding scientific honor, all the watches are named this name are enjoying the technical characteristics. According to the principle of leverage, the main winding of the power through the sesame chain connected to the barrel of the pagoda wheel, clever way to send a constant power to the movement. Pagoda wheel planetary gear system to ensure that the watch on the chain, from the main barrel to the escapement system power will not be interrupted. This delicate and rugged device is meticulously in terms of design, fabrication, modification and assembly.There are also lots of cheap
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