A. Lange & Söhne
A. Lange & Söhne Datograph Up/Down 405.031
The A. Lange & Söhne Datograph Up/Down (reference 405.031) is a 41 mm 18k pink gold watch with a black dial. It runs on the manual caliber L951.6 with a 60-hour power reserve and is water resistant to 30 m. It was introduced in 2015 and is still in production.
Specifications
Case
- Reference
- 405.031
- Collection
- Datograph
- Case size
- 41 mm
- Thickness
- 13.1 mm
- Case material
- 18k pink gold
- Case shape
- Round
- Crystal
- Sapphire
- Water resistance
- 30 m
- Bracelet / strap
- Alligator leather strap
Dial and bezel
- Dial
- Black
Movement
- Movement
- Manual
- Caliber
- L951.6
- Power reserve
- 60 hours
- Frequency
- 18,000 vph
- Jewels
- 46
- Functions
- Flyback chronograph, Big date, Small seconds, Power reserve indicator
Production
- Production
- 2015 – today (current)
How it compares within the Datograph family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| 405.031 (This watch) | 41 mm | 18k pink gold | Black | L951.6 | 2015– |
| 403.031 | 39 mm | 18k pink gold | Black | L951.1 | — |
| 403.032 | 39 mm | 18k pink gold | Silver | L951.1 | 1999–2012 |
| 403.035 | 39 mm | Platinum | Black | L951.1 | 1999–2012 |
| 403.041 | 39 mm | 18k yellow gold | — | L951.1 | — |
| 404.035 | 43.2 mm | Platinum | Black | L001.1 | 2004– |
| 405.035 | 41 mm | Platinum | Black | L951.6 | 2012– |
| 410.038 | 41 mm | 18k white gold | Grey | L952.1 | 2015– |
| 424.038 | 43.2 mm | 18k white gold | Grey | L132.1 | 2018– |
About the Datograph family
The Datograph was introduced in 1999 as a flyback chronograph with Lange's outsize date and a precisely jumping minute counter. Its hand-wound caliber L951.1 is known for its finishing and for the layout of its column-wheel chronograph.
Later versions include the Datograph Perpetual with a perpetual calendar and the Datograph Up/Down with caliber L951.6, which added a power reserve display. The catalog lists references in pink, yellow and white gold and platinum. Dealers identify the generation, metal and dial and ask for a service record from Lange.
Quick answers
- What size is the A. Lange & Söhne Datograph Up/Down 405.031?
- The A. Lange & Söhne Datograph Up/Down 405.031 has a 41 mm case, 13.1 mm thick.
- What movement does the A. Lange & Söhne Datograph Up/Down 405.031 use?
- It uses the manual caliber L951.6, with a 60-hour power reserve.
- How water resistant is the A. Lange & Söhne Datograph Up/Down 405.031?
- It is water resistant to 30 metres.
- Is the A. Lange & Söhne Datograph Up/Down 405.031 still in production?
- Yes, it is a current reference.
- When did the A. Lange & Söhne Datograph Up/Down 405.031 come out?
- It was introduced in 2015.
- What is the A. Lange & Söhne Datograph Up/Down 405.031 made of?
- The case is 18k pink gold. Bracelet or strap: Alligator leather strap.
Catalog facts checked September 2026.