The latest masterpiece from Saxony pairs three complications with five supplementary functions. This unique timepiece by A. Lange & Söhne is not only technically impressive, but also stands out with a superbly organised face despite the density of information it displays. During the development of a multiple-complication timepiece, the most formidable challenge is to achieve the perfect interaction between different highly complex mechanisms and embedding them in a smoothly functioning ensemble.
The black solid-silver dial of the new model contrasts beautifully against the 41.5-millimetre platinum case as well as the hands and hour markers in rhodiumed gold. It is limited to 100 watches. The name of the complicated watch subsumes its abundant timekeeping capabilities. Datograph designates a column-wheel chronograph with a precisely jumping minute counter, a flyback function and the typical Lange outsize date.
To master the challenge of precise short time measurements, the product developers relied on an ingenious feature that had already proven itself in the datograph up/down. Perpetual, the middle element of the name, refers to a instantaneously jumping perpetual calendar with a moon-phase display. All indications of the perpetual calendar – including the outsize date as well as the day-of-week, month and leap-year displays in subsidiary dials – switch instantaneously and thus provide unambiguous readings at all times.
A first correction of the mechanism by one day can wait until the first day of March in the secular year 2100. The fascinating tourbillon mechanism is exposed by the sapphire-crystal caseback and the open tourbillon bridge. There, the escapement rotates about its own axis once a minute inside the filigreed cage. This rotary motion offsets the influence of gravity on the balance wheel with eccentric poising weights. In conjunction with the free-sprung balance spring crafted in-house, it assures excellent rate accuracy across the entire 50-hour power reserve.
More info: www.alange-soehne.com