{"lien_WSTV":"","tax_name":"deprecated","tax_rate":20,"id_manufacturer":"0","id_supplier":"0","id_category_default":"365","id_shop_default":"1","manufacturer_name":false,"supplier_name":false,"name":"Duometre Heliotourbillon Perpetual","description":"<p><strong>JAEGER-LECOULTRE PRESENTS THE <\/strong><\/p>\n<p><strong>DUOMETRE HELIOTOURBILLON PERPETUAL<\/strong><\/p>\n<ul><li>An innovative tourbillon constructed on three axes to create a unique kinematic effect \u2013 a first for Jaeger-LeCoultre<\/li>\n<li>The Duometre concept allied to a perpetual calendar with a grande date<\/li>\n<li>New manual Calibre 388 developed and produced in-house<\/li>\n<\/ul><p>Over the course of almost two centuries, Jaeger-LeCoultre has distinguished itself through the development of increasingly sophisticated means of achieving the perfect regularity of the \u2018heartbeat\u2019 of its calibres \u2013 essential for accurate timekeeping. Among the key areas of research in this pursuit of precision, the Manufacture has developed great expertise in tourbillons and also invented the Duometre mechanism, which enables the addition of complications without any compromise to the accuracy of the timekeeping function.<\/p>\n<p>In 2024, Jaeger-LeCoultre unites these two lines of development, to create the Duometre Heliotourbillon Perpetual. Pushing the boundaries of inventiveness further than ever, the new Calibre 388 features an entirely new tourbillon construction: one that spins on three axes to create a \u2018spinning top\u2019 effect. Beating at a frequency of 4Hz (28,800 vph) to further enhance chronometry, Calibre 388 also incorporates a perpetual calendar with a grande date indication.<\/p>\n<p><strong>The Duometre Concept \u2013 a Breakthrough in Precision<\/strong><\/p>\n<p>Before Jaeger-LeCoultre developed the Duometre concept, adding complications to a watch movement seemed irreconcilable with accurate timekeeping. That is because the fundamental requirement of precise timekeeping is that the power supply from the movement\u2019s barrel to the escapement should be absolutely steady. However, in order to operate, a complication must draw on the power supply, which interrupts that steady flow and thus jeopardises precision.<\/p>\n<p>Introduced in 2007, the patented Duometre mechanism features two barrels and two separate gear trains housed in a single calibre and linked to a single regulating organ. One gear train powers the time indications and the other drives all additional functions. By separating the power supply in this way, the Duometre mechanism guarantees an exceptionally high degree of operating accuracy.<\/p>\n<p>Thanks to this ingenious concept, the Manufacture Jaeger-LeCoultre added a new chapter to watchmaking history, opening the door to horological complexity and laying the foundation of an entire Duometre collection.<\/p>\n<p><strong>The Heliotourbillon \u2013 a New Spin on Multiple Axes<\/strong><\/p>\n<p>Incorporating almost eight decades of accumulated expertise in the tourbillon regulating mechanism, the Duometre Heliotourbillon Perpetual, features a newly developed tourbillon configuration that rotates on three axes. In doing so, it creates a completely new kinematic effect for Jaeger-LeCoultre resembling a spinning top.<\/p>\n<p>Initially devised for pocket-watches, the traditional tourbillon, which spins on a single axis, does not compensate for the effects of gravity in all positions. Having understood that an additional axis of rotation must be added in order to be more effective in all positions that a wrist-worn watch may adopt, Jaeger-LeCoultre\u2019s engineers developed the dual-axis Gyrotourbillon, and various other tourbillon configurations, each fitted with differently shaped hairsprings.<\/p>\n<p>Fitted with a cylindrical hairspring, the Heliotourbillon takes this thinking further, with a newly developed construction comprising three titanium cages rotating on three axes. The first cage is set at a 90-degree angle to the balance wheel and rotates perpendicular to it. The second cage is set at 90 degrees to the first (thus, on the same plane as the balance wheel). Together, these two cages are constrained by an axis tilted at 40 degrees and make a full rotation in 30 seconds. The third cage is perpendicular to the second and makes a full rotation in 60 seconds. Supported on ceramic ball bearings to minimise friction, the tourbillon consists of 163 components and weighs less than 0.7 grams.<\/p>\n<p><strong>A Perpetual Calendar with a grande date Display<\/strong><\/p>\n<p>As a noble complement to the highly sophisticated tourbillon and Duometre mechanisms, Jaeger-LeCoultre\u2019s watchmakers integrated a perpetual calendar into Calibre 388. Among the most challenging complications to master, a perpetual calendar is a miniature mechanical computer that must automatically adjust for months of different lengths and for leap years; it needs manual correction of the day and date indications only in 2100 and in subsequent centenary years that are not also leap years.<\/p>\n<p>A feature of Calibre 388 is that the hours and minutes can be set either backwards or forwards without compromising the perpetual calendar. Because normally, a perpetual calendar is set through the passing of time (the hour and minute hands), adjusting the time backwards desynchronises and can damage the calendar mechanism. In Calibre 388, the relationship between the winding and calendar assemblies is such that the perpetual calendar mechanism moves forwards only and cannot be dragged backwards when the time is set backwards.<\/p>\n<p>Other notable features of Calibre 388 include a Grande Date display: a classical yet rare complication sought-after by watch connoisseurs, it is set at the 3 o\u2019clock position on the hours-and-minutes sub-dial, ensuring great legibility. The year indication shows the last digit of a leap year in red \u2013 a Jaeger-LeCoultre patent \u2013 and the moon-phase indication is accurate to 122 years.<\/p>\n<p><strong>A Refined Dial Reinterprets the Duometre\u2019s Aesthetic Codes<\/strong><\/p>\n<p>The Duometre collection has always been distinguished by the powerful symmetry of the dial layout. On the dial of the Duometre Heliotourbillon Perpetual, the triangular arrangement that directly expresses the underlying mechanism with its two barrels and gear trains has been turned 90 degrees, as if the winding crown forms the apex of the triangle, the time display is flanked by the two power reserves, and the \u2018base\u2019 of the triangle is formed by the moon-phase indicator and days on one side and the months and years on the other.\u00a0\u00a0<\/p>\n<p>On the vertical axis, the two sides of the dial are separated by a gold bridge with contrasting areas of microblasting and bevelling, creating an intriguing play of light \u2013 and echoing the finishes on the watch case. The left-hand side of the dial is open-worked to provide a fascinating view of the tourbillon performing its \u2018spinning top\u2019 rotation \u2013 a kinematic effect created by the combination of the three cages rotating on different axes and at different speeds. A sapphire crystal window in the side of the case offers another way to view this captivating mechanical show.<\/p>\n<p>The tourbillon is set above a background of deep blue lacquer representing a starry sky and, as it spins, red triangles set on the third cage indicate 20-second intervals marked on a sapphire crystal arc that floats above the starry blue background. On the main dial refined finishes abound, with applied hour indexes and frames around the date and year, and a mix of opaline, brushed and azur\u00e9 surfaces creating subtle contrasts between the different indications.<\/p>\n<p>Epitomising the noble art of watchmaking tradition, this fine decoration is carried over to the movement, even on components that are not visible through the sapphire crystal caseback: brushed surfaces contrast with perlage, edges are hand-bevelled and polished, and sunrayed Geneva stripes (c\u00f4tes de Gen\u00e8ve soleill\u00e9es) radiate seamlessly across the entire expanse of the bridges. Like all Jaeger-LeCoultre movements, Calibre 388 was conceived, designed, produced, assembled and finished within the Manufacture.<\/p>\n<p><strong>A New Duometre Case: Contemporary Elegance Inspired by Tradition<\/strong><\/p>\n<p>Marking the launch of three new Duometre models in 2024, Jaeger-LeCoultre has designed an entirely new case for the collection. A contemporary interpretation of the savonette pocket watches created by the Maison in the 19th-century, its rounded contours are highly tactile as well as visually appealing. (The French word savonette literally means a small disc of soap with rounded contours that can be cradled in the palm of a hand.) With its convex crystal and gracefully rounded bezel, the new Duometre case expresses this literal definition very well. The crown, too, has been redesigned, with deep and rounded notches that make it a joy to handle. Indeed, the only sharp lines to be found are on the highly polished edges of the lugs.<\/p>\n<p>Measuring 44 mm in diameter, the case is a complex structure of 34 separate parts and the lugs are screwed rather than integrated, to enable multiple finishing techniques. A mixture of polished, brushed and micro-blasted surfaces creates a fascinating play of light with every movement of the wrist. The apparent simplicity of the case belies its complexity of detail, which perfectly complements the complexity of the calibre within.<\/p>\n<p>With its extreme mechanical sophistication, innovative tourbillon and highly refined aesthetics, the Duometre Heliotourbillon Perpetual represents a new adventure in the Maison\u2019s quest for precision, as well as its boundless creativity.<\/p>","description_short":"","quantity":0,"minimal_quantity":"0","available_now":"","available_later":"","price":0,"specificPrice":false,"additional_shipping_cost":"0.00","wholesale_price":"0.000000","on_sale":"0","online_only":"0","unity":"","unit_price":0,"unit_price_ratio":"0.000000","ecotax":"0.000000","reference":"Q6202420","supplier_reference":"","location":"","width":"0.000000","height":"0.000000","depth":"0.000000","weight":"0.000000","ean13":"","upc":"","link_rewrite":"jeager-lecoultre-duometre-heliotourbillon-perpetual","meta_description":"JAEGER-LECOULTRE PRESENTS THE DUOMETRE HELIOTOURBILLON PERPETUAL An innovative tourbillon constructed on three axes to create a unique kinematic effect \u2013 a f...","meta_keywords":"","meta_title":"Watch Jaeger-LeCoultre Duometre Heliotourbillon Perpetual | Duom\u00e8tre Q6202420 Pink Gold - Silver Dial - Strap Alligator Leather","quantity_discount":"0","customizable":"0","new":false,"uploadable_files":"0","text_fields":"0","active":"1","redirect_type":"","id_product_redirected":"0","available_for_order":"0","available_date":"0000-00-00","condition":"new","show_price":"1","indexed":"0","visibility":"both","date_add":"2024-05-30 16:46:22","date_upd":"2024-08-20 10:19:31","tags":false,"base_price":"0.000000","id_tax_rules_group":"1","id_color_default":0,"advanced_stock_management":"0","out_of_stock":2,"depends_on_stock":false,"isFullyLoaded":true,"cache_is_pack":"0","cache_has_attachments":"0","is_virtual":"0","id_pack_product_attribute":null,"cache_default_attribute":"0","category":"duometre","pack_stock_type":"0","id":8851,"id_shop_list":null,"force_id":false,"customization_required":false}
{"Compl\u00e9ment":"Pink Gold - Silver Dial - Strap Alligator Leather ","Statut de vente":"En vente depuis","Date":"2024","Nombre d exemplaire":"20","Sexe":"Homme","Diam\u00e8tre":"44","Epaisseur":"14.7","Types":"Hand-winding","Styles":"High Horology, Vintage","Calibre_autre":"388 ","Complication":"Hours and Minutes, Seconds, Heliotourbillon, Perpetual calendar (Day; Date; Month; Year), Moon phases, Two power reserves","Mati\u00e8re du bo\u00eetier":"Pink gold","Etanch\u00e9it\u00e9":"30 meters","Forme":"Round","Cadran":"Opal","Couleur du cadran":"Silver","Mati\u00e8re du bracelet":"Alligator leather ","Couleur du bracelet":"Dark Brown","Plus de caract\u00e9ristiques":"<br\/>\r\nMovement<br\/>\r\nManually-wound Jaeger-LeCoultre Calibre 388<br\/>\r\nPower Reserve: 50 hours for each barrel<br\/>\r\n<br\/>\r\nCase<br\/>\r\nPink Gold 750\/1000 (18 carats) <br\/>\r\n<br\/>\r\nDial<br\/>\r\nSilver opaline<br\/>\r\n<br\/>\r\nStrap \/ Buckles<br\/>\r\nBrown alligator leather with small-scale alligator lining<br\/>\r\n<br\/>\r\nLimited edition of 20 pieces"}
Duometre Heliotourbillon Perpetual
Q6202420
| Brand : | Jaeger-LeCoultre |
| Collection : | Duomètre |
| Model : | Duometre Heliotourbillon Perpetual |
| Reference : | Q6202420 |
| Complement : | Pink Gold - Silver Dial - Strap Alligator Leather |
| On sale : | 2024 |
-
Brand : Jaeger-LeCoultre Collection : Duomètre Model : Duometre Heliotourbillon Perpetual Reference : Q6202420 Complement : Pink Gold - Silver Dial - Strap Alligator Leather On sale : 2024 List Price : On request Diameter : 44 mm Thickness : 14.7 mm Styles : High Horology Vintage Types : Hand-winding Calibre : 388 Complication : Hours and Minutes Seconds Heliotourbillon Perpetual calendar (Day; Date; Month; Year) Moon phases Two power reserves Case material : Pink gold Shape : Round Water-resistance : 30 meters Dial : Opal Dial color : Silver Strap material : Alligator leather Strap color : Dark Brown + More characteristics :
Movement
Manually-wound Jaeger-LeCoultre Calibre 388
Power Reserve: 50 hours for each barrel
Case
Pink Gold 750/1000 (18 carats)
Dial
Silver opaline
Strap / Buckles
Brown alligator leather with small-scale alligator lining
Limited edition of 20 pieces
DESCRIPTION
JAEGER-LECOULTRE PRESENTS THE
DUOMETRE HELIOTOURBILLON PERPETUAL
- An innovative tourbillon constructed on three axes to create a unique kinematic effect – a first for Jaeger-LeCoultre
- The Duometre concept allied to a perpetual calendar with a grande date
- New manual Calibre 388 developed and produced in-house
Over the course of almost two centuries, Jaeger-LeCoultre has distinguished itself through the development of increasingly sophisticated means of achieving the perfect regularity of the ‘heartbeat’ of its calibres – essential for accurate timekeeping. Among the key areas of research in this pursuit of precision, the Manufacture has developed great expertise in tourbillons and also invented the Duometre mechanism, which enables the addition of complications without any compromise to the accuracy of the timekeeping function.
In 2024, Jaeger-LeCoultre unites these two lines of development, to create the Duometre Heliotourbillon Perpetual. Pushing the boundaries of inventiveness further than ever, the new Calibre 388 features an entirely new tourbillon construction: one that spins on three axes to create a ‘spinning top’ effect. Beating at a frequency of 4Hz (28,800 vph) to further enhance chronometry, Calibre 388 also incorporates a perpetual calendar with a grande date indication.
The Duometre Concept – a Breakthrough in Precision
Before Jaeger-LeCoultre developed the Duometre concept, adding complications to a watch movement seemed irreconcilable with accurate timekeeping. That is because the fundamental requirement of precise timekeeping is that the power supply from the movement’s barrel to the escapement should be absolutely steady. However, in order to operate, a complication must draw on the power supply, which interrupts that steady flow and thus jeopardises precision.
Introduced in 2007, the patented Duometre mechanism features two barrels and two separate gear trains housed in a single calibre and linked to a single regulating organ. One gear train powers the time indications and the other drives all additional functions. By separating the power supply in this way, the Duometre mechanism guarantees an exceptionally high degree of operating accuracy.
Thanks to this ingenious concept, the Manufacture Jaeger-LeCoultre added a new chapter to watchmaking history, opening the door to horological complexity and laying the foundation of an entire Duometre collection.
The Heliotourbillon – a New Spin on Multiple Axes
Incorporating almost eight decades of accumulated expertise in the tourbillon regulating mechanism, the Duometre Heliotourbillon Perpetual, features a newly developed tourbillon configuration that rotates on three axes. In doing so, it creates a completely new kinematic effect for Jaeger-LeCoultre resembling a spinning top.
Initially devised for pocket-watches, the traditional tourbillon, which spins on a single axis, does not compensate for the effects of gravity in all positions. Having understood that an additional axis of rotation must be added in order to be more effective in all positions that a wrist-worn watch may adopt, Jaeger-LeCoultre’s engineers developed the dual-axis Gyrotourbillon, and various other tourbillon configurations, each fitted with differently shaped hairsprings.
Fitted with a cylindrical hairspring, the Heliotourbillon takes this thinking further, with a newly developed construction comprising three titanium cages rotating on three axes. The first cage is set at a 90-degree angle to the balance wheel and rotates perpendicular to it. The second cage is set at 90 degrees to the first (thus, on the same plane as the balance wheel). Together, these two cages are constrained by an axis tilted at 40 degrees and make a full rotation in 30 seconds. The third cage is perpendicular to the second and makes a full rotation in 60 seconds. Supported on ceramic ball bearings to minimise friction, the tourbillon consists of 163 components and weighs less than 0.7 grams.
A Perpetual Calendar with a grande date Display
As a noble complement to the highly sophisticated tourbillon and Duometre mechanisms, Jaeger-LeCoultre’s watchmakers integrated a perpetual calendar into Calibre 388. Among the most challenging complications to master, a perpetual calendar is a miniature mechanical computer that must automatically adjust for months of different lengths and for leap years; it needs manual correction of the day and date indications only in 2100 and in subsequent centenary years that are not also leap years.
A feature of Calibre 388 is that the hours and minutes can be set either backwards or forwards without compromising the perpetual calendar. Because normally, a perpetual calendar is set through the passing of time (the hour and minute hands), adjusting the time backwards desynchronises and can damage the calendar mechanism. In Calibre 388, the relationship between the winding and calendar assemblies is such that the perpetual calendar mechanism moves forwards only and cannot be dragged backwards when the time is set backwards.
Other notable features of Calibre 388 include a Grande Date display: a classical yet rare complication sought-after by watch connoisseurs, it is set at the 3 o’clock position on the hours-and-minutes sub-dial, ensuring great legibility. The year indication shows the last digit of a leap year in red – a Jaeger-LeCoultre patent – and the moon-phase indication is accurate to 122 years.
A Refined Dial Reinterprets the Duometre’s Aesthetic Codes
The Duometre collection has always been distinguished by the powerful symmetry of the dial layout. On the dial of the Duometre Heliotourbillon Perpetual, the triangular arrangement that directly expresses the underlying mechanism with its two barrels and gear trains has been turned 90 degrees, as if the winding crown forms the apex of the triangle, the time display is flanked by the two power reserves, and the ‘base’ of the triangle is formed by the moon-phase indicator and days on one side and the months and years on the other.
On the vertical axis, the two sides of the dial are separated by a gold bridge with contrasting areas of microblasting and bevelling, creating an intriguing play of light – and echoing the finishes on the watch case. The left-hand side of the dial is open-worked to provide a fascinating view of the tourbillon performing its ‘spinning top’ rotation – a kinematic effect created by the combination of the three cages rotating on different axes and at different speeds. A sapphire crystal window in the side of the case offers another way to view this captivating mechanical show.
The tourbillon is set above a background of deep blue lacquer representing a starry sky and, as it spins, red triangles set on the third cage indicate 20-second intervals marked on a sapphire crystal arc that floats above the starry blue background. On the main dial refined finishes abound, with applied hour indexes and frames around the date and year, and a mix of opaline, brushed and azuré surfaces creating subtle contrasts between the different indications.
Epitomising the noble art of watchmaking tradition, this fine decoration is carried over to the movement, even on components that are not visible through the sapphire crystal caseback: brushed surfaces contrast with perlage, edges are hand-bevelled and polished, and sunrayed Geneva stripes (côtes de Genève soleillées) radiate seamlessly across the entire expanse of the bridges. Like all Jaeger-LeCoultre movements, Calibre 388 was conceived, designed, produced, assembled and finished within the Manufacture.
A New Duometre Case: Contemporary Elegance Inspired by Tradition
Marking the launch of three new Duometre models in 2024, Jaeger-LeCoultre has designed an entirely new case for the collection. A contemporary interpretation of the savonette pocket watches created by the Maison in the 19th-century, its rounded contours are highly tactile as well as visually appealing. (The French word savonette literally means a small disc of soap with rounded contours that can be cradled in the palm of a hand.) With its convex crystal and gracefully rounded bezel, the new Duometre case expresses this literal definition very well. The crown, too, has been redesigned, with deep and rounded notches that make it a joy to handle. Indeed, the only sharp lines to be found are on the highly polished edges of the lugs.
Measuring 44 mm in diameter, the case is a complex structure of 34 separate parts and the lugs are screwed rather than integrated, to enable multiple finishing techniques. A mixture of polished, brushed and micro-blasted surfaces creates a fascinating play of light with every movement of the wrist. The apparent simplicity of the case belies its complexity of detail, which perfectly complements the complexity of the calibre within.
With its extreme mechanical sophistication, innovative tourbillon and highly refined aesthetics, the Duometre Heliotourbillon Perpetual represents a new adventure in the Maison’s quest for precision, as well as its boundless creativity.
JAEGER-LECOULTRE PRESENTS THE
DUOMETRE HELIOTOURBILLON PERPETUAL
- An innovative tourbillon constructed on three axes to create a unique kinematic effect – a first for Jaeger-LeCoultre
- The Duometre concept allied to a perpetual calendar with a grande date
- New manual Calibre 388 developed and produced in-house
Over the course of almost two centuries, Jaeger-LeCoultre has distinguished itself through the development of increasingly sophisticated means of achieving the perfect regularity of the ‘heartbeat’ of its calibres – essential for accurate timekeeping. Among the key areas of research in this pursuit of precision, the Manufacture has developed great expertise in tourbillons and also invented the Duometre mechanism, which enables the addition of complications without any compromise to the accuracy of the timekeeping function.
In 2024, Jaeger-LeCoultre unites these two lines of development, to create the Duometre Heliotourbillon Perpetual. Pushing the boundaries of inventiveness further than ever, the new Calibre 388 features an entirely new tourbillon construction: one that spins on three axes to create a ‘spinning top’ effect. Beating at a frequency of 4Hz (28,800 vph) to further enhance chronometry, Calibre 388 also incorporates a perpetual calendar with a grande date indication.
The Duometre Concept – a Breakthrough in Precision
Before Jaeger-LeCoultre developed the Duometre concept, adding complications to a watch movement seemed irreconcilable with accurate timekeeping. That is because the fundamental requirement of precise timekeeping is that the power supply from the movement’s barrel to the escapement should be absolutely steady. However, in order to operate, a complication must draw on the power supply, which interrupts that steady flow and thus jeopardises precision.
Introduced in 2007, the patented Duometre mechanism features two barrels and two separate gear trains housed in a single calibre and linked to a single regulating organ. One gear train powers the time indications and the other drives all additional functions. By separating the power supply in this way, the Duometre mechanism guarantees an exceptionally high degree of operating accuracy.
Thanks to this ingenious concept, the Manufacture Jaeger-LeCoultre added a new chapter to watchmaking history, opening the door to horological complexity and laying the foundation of an entire Duometre collection.
The Heliotourbillon – a New Spin on Multiple Axes
Incorporating almost eight decades of accumulated expertise in the tourbillon regulating mechanism, the Duometre Heliotourbillon Perpetual, features a newly developed tourbillon configuration that rotates on three axes. In doing so, it creates a completely new kinematic effect for Jaeger-LeCoultre resembling a spinning top.
Initially devised for pocket-watches, the traditional tourbillon, which spins on a single axis, does not compensate for the effects of gravity in all positions. Having understood that an additional axis of rotation must be added in order to be more effective in all positions that a wrist-worn watch may adopt, Jaeger-LeCoultre’s engineers developed the dual-axis Gyrotourbillon, and various other tourbillon configurations, each fitted with differently shaped hairsprings.
Fitted with a cylindrical hairspring, the Heliotourbillon takes this thinking further, with a newly developed construction comprising three titanium cages rotating on three axes. The first cage is set at a 90-degree angle to the balance wheel and rotates perpendicular to it. The second cage is set at 90 degrees to the first (thus, on the same plane as the balance wheel). Together, these two cages are constrained by an axis tilted at 40 degrees and make a full rotation in 30 seconds. The third cage is perpendicular to the second and makes a full rotation in 60 seconds. Supported on ceramic ball bearings to minimise friction, the tourbillon consists of 163 components and weighs less than 0.7 grams.
A Perpetual Calendar with a grande date Display
As a noble complement to the highly sophisticated tourbillon and Duometre mechanisms, Jaeger-LeCoultre’s watchmakers integrated a perpetual calendar into Calibre 388. Among the most challenging complications to master, a perpetual calendar is a miniature mechanical computer that must automatically adjust for months of different lengths and for leap years; it needs manual correction of the day and date indications only in 2100 and in subsequent centenary years that are not also leap years.
A feature of Calibre 388 is that the hours and minutes can be set either backwards or forwards without compromising the perpetual calendar. Because normally, a perpetual calendar is set through the passing of time (the hour and minute hands), adjusting the time backwards desynchronises and can damage the calendar mechanism. In Calibre 388, the relationship between the winding and calendar assemblies is such that the perpetual calendar mechanism moves forwards only and cannot be dragged backwards when the time is set backwards.
Other notable features of Calibre 388 include a Grande Date display: a classical yet rare complication sought-after by watch connoisseurs, it is set at the 3 o’clock position on the hours-and-minutes sub-dial, ensuring great legibility. The year indication shows the last digit of a leap year in red – a Jaeger-LeCoultre patent – and the moon-phase indication is accurate to 122 years.
A Refined Dial Reinterprets the Duometre’s Aesthetic Codes
The Duometre collection has always been distinguished by the powerful symmetry of the dial layout. On the dial of the Duometre Heliotourbillon Perpetual, the triangular arrangement that directly expresses the underlying mechanism with its two barrels and gear trains has been turned 90 degrees, as if the winding crown forms the apex of the triangle, the time display is flanked by the two power reserves, and the ‘base’ of the triangle is formed by the moon-phase indicator and days on one side and the months and years on the other.
On the vertical axis, the two sides of the dial are separated by a gold bridge with contrasting areas of microblasting and bevelling, creating an intriguing play of light – and echoing the finishes on the watch case. The left-hand side of the dial is open-worked to provide a fascinating view of the tourbillon performing its ‘spinning top’ rotation – a kinematic effect created by the combination of the three cages rotating on different axes and at different speeds. A sapphire crystal window in the side of the case offers another way to view this captivating mechanical show.
The tourbillon is set above a background of deep blue lacquer representing a starry sky and, as it spins, red triangles set on the third cage indicate 20-second intervals marked on a sapphire crystal arc that floats above the starry blue background. On the main dial refined finishes abound, with applied hour indexes and frames around the date and year, and a mix of opaline, brushed and azuré surfaces creating subtle contrasts between the different indications.
Epitomising the noble art of watchmaking tradition, this fine decoration is carried over to the movement, even on components that are not visible through the sapphire crystal caseback: brushed surfaces contrast with perlage, edges are hand-bevelled and polished, and sunrayed Geneva stripes (côtes de Genève soleillées) radiate seamlessly across the entire expanse of the bridges. Like all Jaeger-LeCoultre movements, Calibre 388 was conceived, designed, produced, assembled and finished within the Manufacture.
A New Duometre Case: Contemporary Elegance Inspired by Tradition
Marking the launch of three new Duometre models in 2024, Jaeger-LeCoultre has designed an entirely new case for the collection. A contemporary interpretation of the savonette pocket watches created by the Maison in the 19th-century, its rounded contours are highly tactile as well as visually appealing. (The French word savonette literally means a small disc of soap with rounded contours that can be cradled in the palm of a hand.) With its convex crystal and gracefully rounded bezel, the new Duometre case expresses this literal definition very well. The crown, too, has been redesigned, with deep and rounded notches that make it a joy to handle. Indeed, the only sharp lines to be found are on the highly polished edges of the lugs.
Measuring 44 mm in diameter, the case is a complex structure of 34 separate parts and the lugs are screwed rather than integrated, to enable multiple finishing techniques. A mixture of polished, brushed and micro-blasted surfaces creates a fascinating play of light with every movement of the wrist. The apparent simplicity of the case belies its complexity of detail, which perfectly complements the complexity of the calibre within.
With its extreme mechanical sophistication, innovative tourbillon and highly refined aesthetics, the Duometre Heliotourbillon Perpetual represents a new adventure in the Maison’s quest for precision, as well as its boundless creativity.
-
Brand : Jaeger-LeCoultre Collection : Duomètre Model : Duometre Heliotourbillon Perpetual Reference : Q6202420 Complement : Pink Gold - Silver Dial - Strap Alligator Leather On sale : 2024 List Price : On request Diameter : 44 mm Thickness : 14.7 mm Styles : High Horology Vintage Types : Hand-winding Calibre : 388 Complication : Hours and Minutes Seconds Heliotourbillon Perpetual calendar (Day; Date; Month; Year) Moon phases Two power reserves Case material : Pink gold Shape : Round Water-resistance : 30 meters Dial : Opal Dial color : Silver Strap material : Alligator leather Strap color : Dark Brown More characteristics :
Movement
Manually-wound Jaeger-LeCoultre Calibre 388
Power Reserve: 50 hours for each barrel
Case
Pink Gold 750/1000 (18 carats)
Dial
Silver opaline
Strap / Buckles
Brown alligator leather with small-scale alligator lining
Limited edition of 20 pieces