A Lange Sohne Saxonia Datograph Up/Down Pink Gold 41mm Black Dial 405.031 - BRAND NEW

1. What makes the A. Lange & Söhne Datograph Up/Down 405.031 special?
Reference 405.031 combines three of Lange's most celebrated complications — a flyback chronograph, an instantaneously jumping digital date, and a power-reserve indicator — in a single 41mm pink gold case. It is widely considered one of the most technically and aesthetically accomplished chronographs in the world, produced in tiny numbers at the Glashütte manufacture. The addition of the pink gold case and black index dial makes this specific reference particularly desirable among collectors.

2. What movement powers the Datograph Up/Down 405.031?
The watch is driven by a manually wound mechanical movement featuring a flyback chronograph mechanism and a power-reserve display, consistent with all references in the Datograph Up/Down line. Lange constructs and finishes the movement entirely in-house in Glashütte, Germany, to standards that include hand-engraved balance cocks and individually polished components. We do not state a specific caliber number beyond what is confirmed for this listing, but the movement is universally acknowledged as a benchmark of German haute horlogerie.

3. What is the case size of the A. Lange & Söhne Saxonia Datograph Up/Down?
Reference 405.031 features a 41mm case crafted in pink gold, making it an ideal size for most wrists — substantial enough to showcase the dial's architecture without being oversized. The pink gold construction gives it a warm, luxurious feel that distinguishes it from stainless steel or white gold variants in the Datograph family.

4. Is the Datograph Up/Down 405.031 suitable for everyday wear?
While the Datograph Up/Down is technically capable of daily wear, its pink gold case and hand-finished movement make it best appreciated in refined or semi-formal contexts where it can be protected from hard knocks. The leather strap reinforces its character as a dress-oriented complication watch. Many owners rotate it with a sportier watch for casual occasions, reserving the 405.031 for settings that match its elegance.

5. What does the black index dial look like on the 405.031?
The dial is a clean, deep black surface populated by index hour markers in place of applied numerals, lending it a modern and sophisticated aesthetic. Two large chronograph subdials and the jumping digital date window are neatly integrated, while the power-reserve arc completes the layout without visual clutter. The contrast between the black dial and pink gold case and indices is immediately striking and timelessly elegant.

6. Is the 405.031 a good buy, and how can I purchase it from Bizak & Co.?
The Datograph Up/Down 405.031 is a brand-new example of one of watchmaking's most coveted references, combining investment-grade prestige with genuine technical distinction — making it an excellent acquisition for both collectors and first-time Lange buyers. You can purchase this reference directly online at bizakandco.com or contact our team for personalised assistance and pricing information. Bizak & Co. provides full authentication and dealer support on every timepiece we sell.