Zeitwerk Minute Repeater

147.028F

Brand  : A. Lange & Söhne
Collection  : Lange Zeitwerk
Model  : Zeitwerk Minute Repeater
Reference  : 147.028F
Nber of pieces : 30
Complement : White Gold - Deep Blue Dial - Strap Hand-stitched Leather
On sale : 2020

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  • Brand  : A. Lange & Söhne
    Collection  : Lange Zeitwerk
    Model  : Zeitwerk Minute Repeater
    Reference  : 147.028F
    Nber of pieces : 30
    Complement : White Gold - Deep Blue Dial - Strap Hand-stitched Leather
    On sale : 2020
    List Price : 452 800 €
    Diameter : 44,2 mm
    Thickness : 14,1 mm
    Styles : Atypical
    High Horology
    Types : Hand-winding
    Calibre : L043.5
    Calibre distinction : Hand-engraved
    Hand decorated
    Assembled by hand
    Complication : Small Seconds
    Power Reserve Indicator
    Minute Repeater
    Case material : White gold
    Case peculiarity : Sapphire caseback
    Crown for winding the watch and setting the time
    Pusher for activating the striking mechanism
    Shape : Round
    Dial : Solid silver
    Dial color : Night blue
    Display : Jumping Hours and Minutes numerals
    Gold rhodié hands
    Glass : Sapphire
    Strap material : Hand-stitched leather
    Strap color : Blue
    Strap clasp : Folding buckle
    + More characteristics :
    Movement
    Lange manufacture calibre L043.5, manually wound, crafted to the most exacting Lange quality standards
    Decorated and assembled by hand
    Precision-adjusted in five positions
    Three-quarter plate made of untreated German silver
    Balance and escape-wheel cocks engraved by hand
    Constant-force escapement
    Movement parts 771
    No. of jewels 93
    Screwed gold chatons 3
    Lever escapement
    Oscillation system
    Shock-resistant cam-poised balance
    Balance spring crafted in-house
    Frequency 18,000 semi-oscillations per hour
    Precision beat adjustment system with lateral setscrew and whiplash spring
    Power reserve
    36 hours when fully wound if the striking mechanism is not activated
    Movement dimensions
    Diameter: 37.7 millimetres; height: 10.9 millimetres
    Functions
    Hours and minutes with jumping numerals display
    Striking mechanism with decimal minute repeater
    Power-reserve indicator

    Case
    White gold

    Dial
    Solid silver, deep blue
    Time bridge Rhodiumed German silver

    Strap / Buckles
    Hand-stitched leather, blue
    Deployant buckle in white gold

    Limited edition 30 watches

DESCRIPTION

  • ZEITWERK MINUTE REPEATER


    Limited white-gold edition with deep-blue dial


    Presented in 2015, the ZEITWERK MINUTE REPEATER is the world’s only watch that combines a mechanical jumping numerals display with a decimal minute repeater. The complicated timepiece – its assembly alone requires several months – has so far been available only in platinum. Five years after its debut, it now comes in a limited 30-watch edition in white gold with a deep-blue dial.

    The ZEITWERK MINUTE REPEATER features a totally new interpretation of the classic complication. Its striking mechanism – it sounds ten-minute intervals instead of quarter-hours with double strikes – is a convincing logical complement to the “digital” display of the time.


    As soon as the striking mechanism is activated with the repeater pusher at 10 o’clock, it sounds the time as indicated on the dial. One hears what one sees. And one sees what one hears. At 7.52, for instance, the gong hammer on the left strikes the low-pitched gong seven times, once for every elapsed hour. Then, five double tones are struck for the elapsed ten-minute intervals, followed by the right-hand hammer with two high strikes, one for each elapsed minute. The polished gongs and the black-polished gong hammers are subtly integrated in the design of the dial.

    Special design features
    In the development of the striking mechanism, Lange’s engineers relied on the basic principle of the jumping numerals mechanism with which the time is displayed by an hour ring and two minute discs. This configuration makes it possible to sample the number of strikes to be executed – separately for the hours, ten-minute intervals and minutes – directly on the snails that are connected to the mechanical display elements. At the same time, enlarged sampling surfaces enhance the reliability of the striking mechanism. This assures that the acoustic time always corresponds to the displayed time.


    Pusher instead of slide
    The ZEITWERK MINUTE REPEATER features a unique pusher mechanism for triggering the repeater. Because the power for the striking mechanism is delivered by the mainspring barrel, there is no need for a slide – common in minute repeaters – to tension a separate spring. The absence of a large lateral opening in the case eliminated a source of acoustic disruption, thus improving the sound quality. And since a pusher, unlike a slide, can be sealed, the ZEITWERK MINUTE REPEATER is water-resistant to as much as 3 bar.


    Harmonious sound
    To achieve the best possible sound quality, the product developers carefully reconciled all relevant parameters such as the case, gong hammers, gongs and movement architecture with one another. The large white-gold case delivers a reverberant, warm sound. The gongs, patiently tuned by hand, generate pure, resonant tones in perfect harmony.
    Finesse in details


    The ZEITWERK MINUTE REPEATER stands out with a number of refined technical features that in particular optimise its operation.


    Since a switching action could cause mechanical conflicts while the repeater is running, the numerals discs are prevented from incrementing until the repeater sequence has ended. This can take up to 20 seconds. The delay also assures that the digitally displayed time and the acoustic time are always the same.

    For the same reason, the crown cannot be pulled while the striking mechanism is active. The actuation of the repeater pusher uncouples the wheel train of the winder from the ratchet wheel that drives the striking mechanism. This prevents the wheel train of the winder, including the crown, from rotating during the repeater sequence, which would result in an unnecessary loss of energy.
    Finally, when the power reserve drops to less than twelve hours, the striking mechanism can no longer be activated. This assures that the repeater sequence is always executed in full: The watch will not stop unexpectedly before the strike sequence has been completed. On the power-reserve indicator, the 12-hour mark is identified with a red dot.


    Jumping numerals mechanism
    With their precisely jumping numerals display, the ZEITWERK models stand for uncompromising purity of design. Consisting of three discs, the display module is arranged in such a way that the time, with large-format numerals, can be read from left to right in the natural way. With a gentle click and hardly discernible to the human eye, the patented jumping numerals mechanism advances from minute to minute until, at the top of the hour, all three numerals discs simultaneously jump forward by precisely one increment. An exceptionally strong mainspring is required to handle these switching actions. It is equally important to assure the controlled deceleration of the abruptly accelerated discs to rule out damage to the movement. This is done with a fly governor that absorbs excess energy after each switching sequence.


    Constant-force escapement
    As all models of the ZEITWERK watch family, the ZEITWERK MINUTE REPEATER also features a patented constant-force escapement between the barrel and the balance that acts as a pacemaker for the instantaneous advance of the numerals discs in one-minute intervals. At the same time, it makes an important contribution to rate stability by assuring that the balance – regardless of the state of wind of the watch and despite energy-intensive switching processes – is powered with a consistent amount of force across the entire power-reserve duration.


    Flawless craftsmanship
    Composed of 771 parts, the manufacture calibre L043.5 is completed by hand with extreme care and utmost patience. Of the 93 jewels, three are set in screwed gold chatons. The hand-engraved balance cock – the artistic signature of all Lange watches – was given a design complement: the escape-wheel cock engraved with the same motif.

    Edition 2020
    Five years after its debut in 2015, the ZEITWERK MINUTE REPEATER now comes in a 44.2-millimetre white-gold case with a matching deployant. The deep-blue dial in solid silver contrasts beautifully against the rhodiumed German silver time bridge. A blue hand-stitched leather strap highlights the elegance of the timepiece. Limited to 30 watches, this edition is available exclusively in the 33 A. Lange & Söhne boutiques.

  • ZEITWERK MINUTE REPEATER


    Limited white-gold edition with deep-blue dial


    Presented in 2015, the ZEITWERK MINUTE REPEATER is the world’s only watch that combines a mechanical jumping numerals display with a decimal minute repeater. The complicated timepiece – its assembly alone requires several months – has so far been available only in platinum. Five years after its debut, it now comes in a limited 30-watch edition in white gold with a deep-blue dial.

    The ZEITWERK MINUTE REPEATER features a totally new interpretation of the classic complication. Its striking mechanism – it sounds ten-minute intervals instead of quarter-hours with double strikes – is a convincing logical complement to the “digital” display of the time.


    As soon as the striking mechanism is activated with the repeater pusher at 10 o’clock, it sounds the time as indicated on the dial. One hears what one sees. And one sees what one hears. At 7.52, for instance, the gong hammer on the left strikes the low-pitched gong seven times, once for every elapsed hour. Then, five double tones are struck for the elapsed ten-minute intervals, followed by the right-hand hammer with two high strikes, one for each elapsed minute. The polished gongs and the black-polished gong hammers are subtly integrated in the design of the dial.

    Special design features
    In the development of the striking mechanism, Lange’s engineers relied on the basic principle of the jumping numerals mechanism with which the time is displayed by an hour ring and two minute discs. This configuration makes it possible to sample the number of strikes to be executed – separately for the hours, ten-minute intervals and minutes – directly on the snails that are connected to the mechanical display elements. At the same time, enlarged sampling surfaces enhance the reliability of the striking mechanism. This assures that the acoustic time always corresponds to the displayed time.


    Pusher instead of slide
    The ZEITWERK MINUTE REPEATER features a unique pusher mechanism for triggering the repeater. Because the power for the striking mechanism is delivered by the mainspring barrel, there is no need for a slide – common in minute repeaters – to tension a separate spring. The absence of a large lateral opening in the case eliminated a source of acoustic disruption, thus improving the sound quality. And since a pusher, unlike a slide, can be sealed, the ZEITWERK MINUTE REPEATER is water-resistant to as much as 3 bar.


    Harmonious sound
    To achieve the best possible sound quality, the product developers carefully reconciled all relevant parameters such as the case, gong hammers, gongs and movement architecture with one another. The large white-gold case delivers a reverberant, warm sound. The gongs, patiently tuned by hand, generate pure, resonant tones in perfect harmony.
    Finesse in details


    The ZEITWERK MINUTE REPEATER stands out with a number of refined technical features that in particular optimise its operation.


    Since a switching action could cause mechanical conflicts while the repeater is running, the numerals discs are prevented from incrementing until the repeater sequence has ended. This can take up to 20 seconds. The delay also assures that the digitally displayed time and the acoustic time are always the same.

    For the same reason, the crown cannot be pulled while the striking mechanism is active. The actuation of the repeater pusher uncouples the wheel train of the winder from the ratchet wheel that drives the striking mechanism. This prevents the wheel train of the winder, including the crown, from rotating during the repeater sequence, which would result in an unnecessary loss of energy.
    Finally, when the power reserve drops to less than twelve hours, the striking mechanism can no longer be activated. This assures that the repeater sequence is always executed in full: The watch will not stop unexpectedly before the strike sequence has been completed. On the power-reserve indicator, the 12-hour mark is identified with a red dot.


    Jumping numerals mechanism
    With their precisely jumping numerals display, the ZEITWERK models stand for uncompromising purity of design. Consisting of three discs, the display module is arranged in such a way that the time, with large-format numerals, can be read from left to right in the natural way. With a gentle click and hardly discernible to the human eye, the patented jumping numerals mechanism advances from minute to minute until, at the top of the hour, all three numerals discs simultaneously jump forward by precisely one increment. An exceptionally strong mainspring is required to handle these switching actions. It is equally important to assure the controlled deceleration of the abruptly accelerated discs to rule out damage to the movement. This is done with a fly governor that absorbs excess energy after each switching sequence.


    Constant-force escapement
    As all models of the ZEITWERK watch family, the ZEITWERK MINUTE REPEATER also features a patented constant-force escapement between the barrel and the balance that acts as a pacemaker for the instantaneous advance of the numerals discs in one-minute intervals. At the same time, it makes an important contribution to rate stability by assuring that the balance – regardless of the state of wind of the watch and despite energy-intensive switching processes – is powered with a consistent amount of force across the entire power-reserve duration.


    Flawless craftsmanship
    Composed of 771 parts, the manufacture calibre L043.5 is completed by hand with extreme care and utmost patience. Of the 93 jewels, three are set in screwed gold chatons. The hand-engraved balance cock – the artistic signature of all Lange watches – was given a design complement: the escape-wheel cock engraved with the same motif.

    Edition 2020
    Five years after its debut in 2015, the ZEITWERK MINUTE REPEATER now comes in a 44.2-millimetre white-gold case with a matching deployant. The deep-blue dial in solid silver contrasts beautifully against the rhodiumed German silver time bridge. A blue hand-stitched leather strap highlights the elegance of the timepiece. Limited to 30 watches, this edition is available exclusively in the 33 A. Lange & Söhne boutiques.

  • Brand  : A. Lange & Söhne
    Collection  : Lange Zeitwerk
    Model  : Zeitwerk Minute Repeater
    Reference  : 147.028F
    Nber of pieces : 30
    Complement : White Gold - Deep Blue Dial - Strap Hand-stitched Leather
    On sale : 2020
    List Price : 452 800 €
    Diameter : 44,2 mm
    Thickness : 14,1 mm
    Styles : Atypical
    High Horology
    Types : Hand-winding
    Calibre : L043.5
    Calibre distinction : Hand-engraved
    Hand decorated
    Assembled by hand
    Complication : Small Seconds
    Power Reserve Indicator
    Minute Repeater
    Case material : White gold
    Case peculiarity : Sapphire caseback
    Crown for winding the watch and setting the time
    Pusher for activating the striking mechanism
    Shape : Round
    Dial : Solid silver
    Dial color : Night blue
    Display : Jumping Hours and Minutes numerals
    Gold rhodié hands
    Glass : Sapphire
    Strap material : Hand-stitched leather
    Strap color : Blue
    Strap clasp : Folding buckle
    More characteristics :
    Movement
    Lange manufacture calibre L043.5, manually wound, crafted to the most exacting Lange quality standards
    Decorated and assembled by hand
    Precision-adjusted in five positions
    Three-quarter plate made of untreated German silver
    Balance and escape-wheel cocks engraved by hand
    Constant-force escapement
    Movement parts 771
    No. of jewels 93
    Screwed gold chatons 3
    Lever escapement
    Oscillation system
    Shock-resistant cam-poised balance
    Balance spring crafted in-house
    Frequency 18,000 semi-oscillations per hour
    Precision beat adjustment system with lateral setscrew and whiplash spring
    Power reserve
    36 hours when fully wound if the striking mechanism is not activated
    Movement dimensions
    Diameter: 37.7 millimetres; height: 10.9 millimetres
    Functions
    Hours and minutes with jumping numerals display
    Striking mechanism with decimal minute repeater
    Power-reserve indicator

    Case
    White gold

    Dial
    Solid silver, deep blue
    Time bridge Rhodiumed German silver

    Strap / Buckles
    Hand-stitched leather, blue
    Deployant buckle in white gold

    Limited edition 30 watches