A. Lange & Sohne Datograph Watch, round 18kt rose gold case (39mm diameter, 12.8mm thickness) with see-through sapphire crystal case back, brown crocodile leather strap with 18kt rose gold tang buckle, silver dial with rose gold hands and applied Roman numerals and minute track, flyback chronograph function, large double date calendar window at 12 o'clock, 40 jewel #L951.1 Caliber manual-winding mechanical movement with 36 hour power reserve, scratch-resistant sapphire crystal, water-resistant to 30 meters.The A. Lange & Sohne Datograph reflects a totally new approach in the development of chronographs based on the classic column-wheel principle; it stands out as a worthy ambassador for the attribute "Made in Germany". With its impressive line-up of complicated mechanisms, it deserves to be called an exceptional phenomenon in the domain of mechanical watchmaking. The Datograph stops events as long as 30 minutes with an accuracy of one-fifth of a second. Thanks to the precisely jumping minute counter, the stopped time is very easy to read. The flyback function allows the chronograph to be instantaneously reset to zero during an ongoing measurement, simply by pressing a push-piece in the case. As soon as it is released, a new timing cycle begins. This eliminates the need to stop a measurement and reset the stop hand before starting a new measurement. The patented outsize date in the twin gold-framed aperture assures excellent legibility. The luminous hour and minute hands are made of rhodiumed gold. The hands in the subsidiary dials are crafted from blued steel. The tachometer scale along the circumference of the main dial adds a subtly dynamic touch to the personality of this remarkable watch. The A. Lange & Sohne Datograph is available in 18-carat pink gold or platinum. It is worn either on a crocodile strap or an exquisite precious-metal bracelet. The sapphire-crystal case back, secured with six screws, showcases the technical and aesthetic finesse of Lange's L951.1 movement.
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