- Movement
- Self-winding
- Size
- 38.5 mm
Overview
The Langematik Perpetual in a 38.5 mm case
The A. Lange & Söhne Langematik Perpetual, reference 310.025 E, in a 950 platinum case, 38.5 mm across and 10.2 mm high, with a rhodié dial. Self-winding calibre L922.1 with perpetual calendar, moon-phase display and outsize date, on a black alligator leather strap with a platinum prong buckle.
A. Lange & Söhne no longer makes this reference. This execution has a rhodié dial and a black alligator leather strap with a platinum prong buckle.
The movement is calibre L922.1, self-winding, with 478 parts and a reserve of 46 hours; the balance beats at 21,600 semi-oscillations an hour (3.0 Hz). Lange lists the outsize date, day/night indicator, moon-phase display, ZERO-RESET mechanism, day-of-week display and perpetual calendar as its functions. The case is 10.2 mm high, water resistant to 3 bar, with a sapphire glass case back. The strap is alligator leather, closed with a prong buckle in the case metal.
Key details
Calibre L922.1
- Self-winding
- Perpetual calendar, outsize date, day-of-week display, moon-phase display, day/night indicator and ZERO-RESET mechanism
- 478 parts
- 21,600 semi-oscillations per hour (3.0 Hz)
- Power reserve 46 hours
The reference
Technical specifications
| Reference | 310.025 E |
|---|---|
| Collection | Saxonia |
| Calibre | L922.1 |
| Movement | Self-winding |
| Functions | Outsize date, day/night indicator, moon-phase display, ZERO-RESET mechanism, day-of-week display, perpetual calendar |
| Power reserve | 46 hours |
| Frequency | 21,600 semi-oscillations per hour (3.0 Hz) |
| Movement parts | 478 |
| Case dimensions | 38.5 mm |
| Case height | 10.2 mm |
| Case material | 950 platinum |
| Case back | Sapphire glass |
| Water resistance | 3 bar |
| Dial | Rhodié |
| Strap | Black alligator leather |
| Clasp | 950 platinum prong buckle |
| Status | Discontinued — A. Lange & Söhne no longer makes this reference |
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