The A. Lange & Söhne Lange 1 Tourbillon Perpetual Calendar is now presented in a discreet white-gold case with a grey dial. It combines two classic complications with the iconic design of A. Lange & Söhne’s most famous watch family.
The calendar consists of a Lange outsize date, retrograde day-of-the-week and leap-year displays and a peripheral month ring. Due to the clear separation of the time and date, all information can be taken in at even a cursory glance. All of the perpetual calendar displays advance instantaneously.
The A. Lange & Söhne Lange 1 Tourbillon Perpetual Calendar in a white-gold case with a grey dial.
The watch measures 41.9 mm in diameter and 12.2 mm in height.
A subtle inscription beneath the twelve refers to the existence of the tourbillon. By looking through the sapphire-crystal caseback, it can be admired in all its technical complexity. The movement is equipped with Lange’s patented stop-seconds mechanism. This allows the watch to be set with one-second accuracy. The upper part of the tourbillon cage is decorated with black polish, the most sophisticated and time-consuming type of artisanal surface finishing. The bearing of the tourbillon cage features a diamond endstone as a tribute to the historic 1A pocket watches by A. Lange & Söhne.
Caseback reveals the Lange manufacture calibre L082.1.
A solid central rotor with a 21-carat-gold segment in the middle and an additional platinum centrifugal mass on the periphery efficiently tension the mainspring of the selfwinding calibre L082.1 movement so that the maximum power reserve of 50 hours is built up after just a short time on the wrist.
The watch retails at €315900.
For more information please visit A. Lange & Söhne
| Movement | Lange manufacture calibre L082.1; self-winding, decorated and assembled by hand; precision-adjusted in five positions; plates and bridges made of untreated German silver; central element of the unidirectional winding rotor in 21-carat gold with platinum centrifugal mass; intermediate-wheel and tourbillon cocks engraved by hand |
| Movement parts | 624 |
| Jewels | 76, including one diamond endstone |
| Screwed gold chatons | 6, including one diamond endstone |
| Escapement | Lever escapement |
| Oscillator | Shock-resistant balance with eccentric poising weights; balance spring manufactured in-house with a frequency of 21,600 semi-oscillations per hour |
| Power reserve | 50 hours when fully wound |
| Functions | Time indicated in hours, minutes and subsidiary seconds; tourbillon with patented stop-seconds mechanism; perpetual calendar with outsize date, day of week, month and leap year; day/night indicator; moon-phase display |
| Operating elements | Crown for winding the watch and setting the time; recessed push pieces for advancing all calendar displays or separately correcting the month, day of week and moon phase |
| Case dimensions | Diameter: 41.9 millimetres; height: 12.2 millimetres |
| Movement dimensions | Diameter: 34.1 millimetres; height: 7.8 millimetres |
| Crystal and back | Sapphire crystal (Mohs hardness 9) |
| Case | White gold |
| Dial | Solid silver, grey |
| Hands | Rhodiumed gold |
| Strap | Hand-stitched alligator leather strap, black |
| Buckle | Lange deployant buckle in white gold |
