- Movement
- Self-winding
- Size
- 38.5 mm
Overview
The Langematik Perpetual in a 38.5 mm case
The A. Lange & Söhne Langematik Perpetual, reference 310.028 E, in an 18-carat white gold case, 38.5 mm across and 10.2 mm high, with a blue dial. Self-winding calibre L922.1 with perpetual calendar, moon-phase display and outsize date, on a dark blue alligator leather strap with a white gold prong buckle.
A. Lange & Söhne no longer makes this reference. Lange states that this model was launched in 2001. This version has a blue dial in solid silver and a dark blue alligator leather strap with a white gold prong buckle. Lange limits this version to 50 pieces.
Lange says the Langematik Perpetual was the first mechanical wristwatch to pair a perpetual calendar with its outsize date. The calendar shows the date, the day of the week and the month, and allows for the differing lengths of the months, leap years included.
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). 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
Design and engineering
- Perpetual calendarThe calendar displays the date, day of the week and month automatically, allowing for month lengths and leap years.
- DisplaysThe outsize date, day-of-week display, moon-phase display and day/night indicator are listed with the ZERO-RESET mechanism as the functions of calibre L922.1.
- Case18-carat white gold, 38.5 mm across and 10.2 mm high, with a sapphire glass case back and water resistance of 3 bar.
- Strap and buckleDark blue alligator leather, closed with an 18-carat white gold prong buckle.
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 | 310.028 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 | 18-carat white gold |
| Case back | Sapphire glass |
| Water resistance | 3 bar |
| Dial | Blue |
| Strap | Dark blue alligator leather |
| Clasp | 18-carat white gold prong buckle |
| Limited edition | 50 pieces |
| Status | Discontinued — A. Lange & Söhne no longer makes this reference |
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