First unveiled in 1999, the Datograph holds a distinguished place in A. Lange & Söhne's catalog as a landmark in chronograph design. This reference 403.035 houses the manually wound L951.6 movement, featuring a flyback chronograph mechanism that enables instantaneous reset and restart of the timing function alongside a precisely jumping large date display — both hallmarks of the model's character.
The 39mm round platinum case is fitted with an exhibition caseback, offering a view of the hand-finished movement within. Hour markers combine index and Roman numeral styling on the black dial, while the grey alligator strap fastens with a tang buckle. Water resistance is rated to 50 metres.
Manufactured in Germany, the Datograph 403.035 carries complications spanning flyback chronograph, date, hours, minutes, and seconds — a considered arrangement that balances mechanical depth with legible, everyday wearability.