| Brand | A. Lange & Söhne |
| Caliber Number | L001.1 |
| Movement Type | Mechanical, manual-wind |
| In-House? | Yes |
| Diameter | 30.5mm |
| Height | 9.5mm |
| Total Components | 465 |
| Jewels | 40 |
| Beat Rate | 21,600, 3Hz |
| Power Reserve | 38 hours |
| Chronograph System | Column wheel |
| Hand Count | 8 |
| Functions | Central hours; central minutes; central double split flyback chronograph seconds; 30 minutes double split chronograph counter at 4:00; small running seconds at 8:00; power reserve indicator at 12:00 |
| Features | Double chronograph, rattrapante, flyback |
| Country of Manufacture | Made in Glashutte, Germany |
| Known Models | A. Lange & Söhne Double Split (Refs: 404.032, 404.035) (Add your watch to the comments below…) |
The A. Lange & Sohne caliber L001.1 is an in-house mechanical double chronograph movement with a flyback function.
Originally introduced in 2004 in the A. Lange & Sohne Double Split, the cal. L001.1 is the first double rattrapante mechanical chronograph movement in the world.
In the manufacturer’s own words:
“The DOUBLE SPLIT is the worldʼs first mechanical chronograph with a double-rattrapante function. It features two chronograph hands and two rattrapante hands. Both pairs of hands can be stopped separately. Additionally, the stopped rattrapante hands can rejoin the still running chronograph hands. This allows purely mechanical comparative and intermediate time measurements of events lasting up to 30 minutes.”
Additional Resources:
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