ZERO-RESET MECHANISM

The patented zero-reset

With the ZERO-RESET mechanism, the movement stops and the seconds hand jumps to zero when the crown is pulled. This allows the watch to be accurately synchronised.

LANGEMATIK PERPETUAL

in 18-carat pink gold

310.032 E

LANGEMATIK PERPETUAL

in 18-carat pink gold

310.037 E

Limited Edition

LANGEMATIK PERPETUAL

in 18-carat white gold

310.028 E

Limited Edition

LANGEMATIK PERPETUAL HONEYGOLD

in 18-carat HONEYGOLD®

310.050 E

Limited Edition

RICHARD LANGE JUMPING SECONDS

in 18-carat white gold

252.029

RICHARD LANGE JUMPING SECONDS

in 18-carat pink gold

252.032

Limited Edition

RICHARD LANGE JUMPING SECONDS

in 950 platinum

252.025

Limited Edition

The mechanism consists of a complex lever system that presses a zero-reset lever against a heart-shaped cam. The seconds hand is attached to the same arbor on which the heart cam rotates. When the heart cam is pivoted into its initial position by the zero-reset lever, this also causes the seconds hand to jump to zero. Pushing the crown home again instantly restarts the movement and with it the seconds hand.

In a modified, even more complex form, this mechanism can also be found in the 1815 TOURBILLON except that here, the tourbillon must be stopped instead of the balance.

Complications

Grand complications

Grand complications such as the tourbillon, perpetual calendar, rattrapante chronograph or the minute repeater belong to the top tier of precision watchmaking. Some A. Lange & Söhne watches combine several great complications and sophisticated technical solutions in one single watch.

Outsize date

The A. Lange & Söhne outsize date enables a date display with digits around three times as large as those in watches of comparable dimensions.

Chronograph

Chronographs and their manufacture movements have been flagship products of A. Lange & Söhne since 1999.

Calendar function

Lange models incorporate either annual calendars or perpetual calendars.

Moon-phase display

Most of our moon-phase displays reproduce the moon’s orbit with a precision of 99.998 per cent.

Power-reserve indicator

The UP/DOWN display reminds the owner to rewind the watch before it stops running.

Tourbillon watches

The tourbillon improves the rate accuracy of a mechanical timepiece by overcoming the influence of gravity on the running of a watch.

Zero-reset mechanism

With the ZERO-RESET mechanism, the movement stops and the seconds hand jumps to zero when the crown is pulled.

The fusée-and-chain transmission

The fusée-and-chain transmission is one of the most effective complications when it comes to increasing the rate accuracy of a mechanical watch.

Constant-force escapement

The purpose of a constant-force escapement in a mechanical watch is to provide the escapement with a consistent flow of power, regardless of whether the watch is fully wound or nearly unwound.

Striking mechanisms

Watches with a minute repeater or other striking mechanisms make time audible. Given their horological intricacy, these models are among the most elaborate and rare timepieces in the realm of precision watchmaking.

Tourbillon watches

The tourbillon improves the rate accuracy of a mechanical timepiece by overcoming the influence of gravity on the running of a watch.

Jumping seconds mechanism

The mechanism of the jumping second assures unambiguous readings at any time, because it advances the large seconds hand by exactly 60 steps per minute.

Finishing and engraving

The art of finishing movements ranks high in our manufacture. No matter whether large or infinitesimal, whether clearly visible or hidden, almost every part is decorated by hand. Different techniques are used: every component is assigned its own individual type of finish, the sum total a harmonious overall appearance.

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The patented zero-reset

Complications

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Exclusive insights into the world of fine watchmaking