- Movement
- Manually wound
- Size
- 41.5 mm
Overview
The Datograph Perpetual Tourbillon in a 41.5 mm case
The A. Lange & Söhne Datograph Perpetual Tourbillon, reference 740.056FE, in an 18-carat white gold case, 41.5 mm across and 14.6 mm high, with an 18-carat pink gold dial. Manually wound calibre L952.2 with tourbillon, chronograph and perpetual calendar, on a dark brown alligator leather strap with a white gold deployant buckle.
Lange says the Datograph Perpetual Tourbillon combines three complications: a tourbillon whose stop-seconds mechanism is patented, a perpetual calendar and a flyback chronograph. In this white gold version the dial is solid pink gold. Lange limits it to 100 pieces.
The movement is calibre L952.2, manually wound, with 729 parts, a reserve of 50 hours and a balance beating at 18,000 semi-oscillations an hour (2.5 Hz). Lange lists the outsize date, power-reserve indicator, day/night indicator, moon-phase display, tourbillon, chronograph, day-of-week display and perpetual calendar. The case is 14.6 mm high, water resistant to 3 bar, with a sapphire glass case back. The strap is dark brown alligator leather, closed with a deployant buckle in 18-carat white gold.
Key details
Design and engineering
- DialA dial in solid 18-carat pink gold, set in a white gold case.
- TourbillonLange gives the tourbillon a patented stop-seconds mechanism and lists it among the functions of calibre L952.2.
- ChronographDescribed by Lange as a flyback chronograph, one of the three complications it names for the model.
- Case18-carat white gold, 41.5 mm across and 14.6 mm high, with a sapphire glass case back and water resistance of 3 bar.
- Strap and buckleDark brown alligator leather, closed with an 18-carat white gold deployant buckle.
Calibre L952.2
- Manually wound
- Outsize date, power-reserve indicator, day/night indicator, moon-phase display, tourbillon, chronograph, day-of-week display and perpetual calendar
- 729 parts
- 18,000 semi-oscillations per hour (2.5 Hz)
- Power reserve 50 hours
The reference
Technical specifications
| Reference | 740.056FE |
|---|---|
| Collection | Saxonia |
| Calibre | L952.2 |
| Movement | Manually wound |
| Functions | Outsize date, power-reserve indicator, day/night indicator, moon-phase display, tourbillon, chronograph, day-of-week display, perpetual calendar |
| Power reserve | 50 hours |
| Frequency | 18,000 semi-oscillations per hour (2.5 Hz) |
| Movement parts | 729 |
| Case dimensions | 41.5 mm |
| Case height | 14.6 mm |
| Case material | 18-carat white gold |
| Case back | Sapphire glass |
| Water resistance | 3 bar |
| Dial | 18-carat pink gold |
| Strap | Dark brown alligator leather |
| Clasp | 18-carat white gold deployant buckle |
| Limited edition | 100 pieces |
Buying with HYPA
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