- 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 740.036FE, in a 950 platinum case, 41.5 mm across and 14.6 mm high, with a black dial. Manually wound calibre L952.2 with tourbillon, chronograph and perpetual calendar, on a black alligator leather strap with a platinum deployant buckle.
A. Lange & Söhne no longer makes this reference. Lange states that this model was introduced in 2016, and it limits this version to 100 pieces.
Lange lists the Datograph Perpetual Tourbillon with an outsize date, a power-reserve indicator, a day/night indicator, a moon-phase display, a tourbillon, a chronograph, a day-of-week display and a perpetual calendar, on one manually wound calibre.
The movement is calibre L952.2, manually wound, with 729 parts and a reserve of 50 hours; the balance beats at 18,000 semi-oscillations an hour (2.5 Hz). The case is 14.6 mm high, water resistant to 3 bar, with a sapphire glass case back. The strap is alligator leather, closed with a deployant buckle in the case metal.
Key details
Design and engineering
- DialA black dial in solid silver, with solid-gold appliques and hour markers.
- HandsRhodiumed gold and blued steel.
- Luminous partsThe hour and minute hands are luminous, and so are the hour markers at 12, 3, 6 and 9.
- Case950 platinum, 41.5 mm across and 14.6 mm high, with a sapphire glass case back and water resistance of 3 bar.
- Strap and buckleBlack alligator leather, closed with a 950 platinum 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 | 740.036FE |
|---|---|
| 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 | 950 platinum |
| Case back | Sapphire glass |
| Water resistance | 3 bar |
| Dial | Black |
| Strap | Black alligator leather |
| Clasp | 950 platinum deployant buckle |
| Limited edition | 100 pieces |
| Status | Discontinued — A. Lange & Söhne no longer makes this reference |
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