MODEL: DAYTOGRAPH With Box & Cert Dated OCT 2012, LOCAL AD. Manual winding in 18K rose gold case 39mm, chronograph with flyback and precisely jumping minute counter. Patented outsize date. 36 hours power reserve. With this technical masterpiece "Made in Germany", Lange created a new benchmark in the construction of exquisite mechanical watches. The DATOGRAPH is the world's first chronograph based on the classic column-wheel principle with flyback, precisely jumping minute counter, and patented outsize date. 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.