A. Lange & Söhne
A. Lange & Söhne Zeitwerk 140.021
The A. Lange & Söhne Zeitwerk (reference 140.021) is a 41.9 mm 18k yellow gold watch. It runs on the manual caliber L043.1 with a 36-hour power reserve. It was introduced in 2009.
Specifications
Case
- Reference
- 140.021
- Collection
- Zeitwerk
- Case size
- 41.9 mm
- Thickness
- 12.6 mm
- Case material
- 18k yellow gold
- Case shape
- Round
- Crystal
- Sapphire
- Bracelet / strap
- Alligator leather strap
Movement
- Movement
- Manual
- Caliber
- L043.1
- Power reserve
- 36 hours
- Frequency
- 18,000 vph
- Functions
- Jumping hour, Digital minutes, Small seconds, Power reserve indicator
Production
- Production
- 2009 – today (discontinued)
How it compares within the Zeitwerk family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| 140.021 (This watch) | 41.9 mm | 18k yellow gold | — | L043.1 | 2009– |
| 140.025 | 41.9 mm | Platinum | — | L043.1 | 2009– |
| 140.029 | 41.9 mm | 18k white gold | Black | L043.1 | 2009–2021 |
| 140.032 | 41.9 mm | 18k pink gold | Silver | L043.1 | 2009–2021 |
| 142.025 | 41.9 mm | Platinum | Silver | L043.6 | 2022– |
| 142.031 | 41.9 mm | 18k pink gold | Black | L043.6 | 2022– |
| 145.032 | — | Pink gold | — | — | — |
| 148.033 | 44.2 mm | 18k pink gold | Grey | L043.8 | 2019– |
| 148.038 | 44.2 mm | 18k white gold | — | L043.8 | 2019– |
About the Zeitwerk family
The Zeitwerk was introduced in 2009 as a mechanical watch with a digital display: hours and minutes jump on discs read through a large window. Moving the discs at once needs a lot of energy, so the caliber L043.1 uses a constant-force mechanism to keep the rate stable.
Later versions include the Zeitwerk Minute Repeater, which chimes the time in decimal fashion, and the Zeitwerk Date of 2021 with caliber L043.8. The catalog lists pink, white, yellow and honey gold and platinum references. Dealers check that the jumping display works crisply and ask for service history.
Quick answers
- What size is the A. Lange & Söhne Zeitwerk 140.021?
- The A. Lange & Söhne Zeitwerk 140.021 has a 41.9 mm case, 12.6 mm thick.
- What movement does the A. Lange & Söhne Zeitwerk 140.021 use?
- It uses the manual caliber L043.1, with a 36-hour power reserve.
- Is the A. Lange & Söhne Zeitwerk 140.021 still in production?
- Discontinued.
- When did the A. Lange & Söhne Zeitwerk 140.021 come out?
- It was introduced in 2009.
- What is the A. Lange & Söhne Zeitwerk 140.021 made of?
- The case is 18k yellow gold. Bracelet or strap: Alligator leather strap.
Catalog facts checked September 2026.