Introduced into the market in the 1999 Baselworld, the Datograph Flyback was a game-changer in the history of horology and an impressive achievement for a relatively young brand. The flyback function of the Datograph Flyback allows the chronograph to be instantly reset to zero and started again in the midst of an ongoing measurement by simply pushing down the chronograph button. As soon as the button is released, a new timing cycle commences. In addition to the fly-back function, the Datograph Flyback also features a precisely-jumping minute counter.

The present Datograph Flyback is from the second generation, in which Lange re-designed the model to give it a larger case size as well as a power reserve indicator. Additionally, there were some cosmetic alterations, including the removal of roman numerals from the dial and the addition of a power reserve indicator at 6 o'clock, which is referred by collectors as "Up/Down". The entire movement can be brilliantly seen through the transparent caseback. Overall, the upgraded design, along with its sublime technical prowess and appealing look, makes the present Datograph Flyback a grail amongst watch enthusiasts.