- Movement
- Manually wound
- Size
- 43 mm
Overview
The Tourbograph Perpetual in a 43 mm case
The A. Lange & Söhne Tourbograph Perpetual “Pour le Mérite”, reference 706.025FE, in a 950 platinum case, 43 mm across and 16.6 mm high, with an argenté dial. Manually wound calibre L133.1 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 limits this version to 50 pieces. The case is 950 platinum and the dial is argenté, crafted from solid silver; the strap is black alligator leather with a platinum deployant buckle.
Lange’s text says the Tourbograph Perpetual combines five complications, and it names the fusée-and-chain transmission, the tourbillon, the rattrapante chronograph and the perpetual calendar.
The movement is calibre L133.1, manually wound, with 684 parts and a reserve of 36 hours; the balance beats at 21,600 semi-oscillations an hour (3.0 Hz). Lange lists the moon-phase display, tourbillon, chronograph, fusée-and-chain transmission, day-of-week display, perpetual calendar and analogue date. The case is 16.6 mm high, water resistant to 3 bar, with a sapphire glass case back. The strap is alligator leather, closed with a deployant buckle.
Key details
Design and engineering
- ComplicationsLange names the fusée-and-chain transmission, the tourbillon, the rattrapante chronograph and the perpetual calendar in its description of the model.
- CalendarThe functions of calibre L133.1 include the day-of-week display, the analogue date and the moon-phase display.
- Case43 mm across and 16.6 mm high, with a sapphire glass case back and water resistance of 3 bar.
- Strap and buckleAlligator leather, closed with a deployant buckle.
Calibre L133.1
- Manually wound
- Moon-phase display, tourbillon, chronograph, fusée-and-chain transmission, day-of-week display, perpetual calendar and analogue date
- 684 parts
- 21,600 semi-oscillations per hour (3.0 Hz)
- Power reserve 36 hours
The reference
Technical specifications
| Reference | 706.025FE |
|---|---|
| Collection | 1815 |
| Calibre | L133.1 |
| Movement | Manually wound |
| Functions | Moon-phase display, tourbillon, chronograph, fusée-and-chain transmission, day-of-week display, perpetual calendar, Analog date |
| Power reserve | 36 hours |
| Frequency | 21,600 semi-oscillations per hour (3.0 Hz) |
| Movement parts | 684 |
| Case dimensions | 43 mm |
| Case height | 16.6 mm |
| Case material | 950 platinum |
| Case back | Sapphire glass |
| Water resistance | 3 bar |
| Dial | Argenté |
| Strap | Black alligator leather |
| Clasp | 950 platinum deployant buckle |
| Limited edition | 50 pieces |
| Status | Discontinued — A. Lange & Söhne no longer makes this reference |
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