During the Geneva Watch Days 2023, Bernhard Lederer unveiled new steel (904L) and 18K rose gold versions of his award-winning Central Impulse Chronometer watch.
This final two series brings to a close the amazing adventure of his celebrated Central Impulse Chronometer. In all, only 100 pieces will have been offered to collectors:
- Series 1: 25 pieces in white gold, ‘Light Rhodium’ dial, presented in 2021
- Series 2: 25 pieces in white gold, ‘Deep Blue’ dial, presented in 2021
- Series 3: 25 pieces in rose gold, ‘Black Rhodium’ dial, presented in August 2023
- Series 4: 25 pieces in 904L steel, ‘Pacific Green dial, presented in August 2023
Winner of the Innovation Award at the Grand Prix d’Horlogerie de Genève in 2021, this high-performance chronometer with its revolutionary escapement is now available either in a rare 904L steel version with a Pacific Green grey-green open dial, or in an 18K rose gold version with a Black Rhodium grey-black open dial.
Within the case, Bernhard Lederer’s exceptional, multiple-award-winning caliber combines a new type of constant-force escapement with a double gear train. It boasts two perfectly synchronized seconds hands, running in opposite directions within two intertwined apertures that together form a majestic figure eight.
The refined craftsmanship and finishing down to the smallest detail further amplify the movement’s architecture and performance, reflecting Bernhard Lederer’s characteristic perfectionism.
The case is 44mm in diameter and 12.2mm in thickness, with two domed crystals to underline the slim silhouette of this horological masterpiece. The first two series of Central Impulse Chronometer brought out in 2021 were both in white gold and had an open dial.
These final two come in either pink gold with a galvanically treated black rhodium dial (Series 3) or 904L steel with a “Pacific Green” dial in shades of green and grey (Series 4). Each series is limited to 25 pieces.
The round cases in 5N rose gold or 904L stainless steel feature soft, elegant lines. Their slim, polished bezels amplify the sense of a vast dial. Two apertures around the seconds hands offer a view of the caliber 9012, its remontoires and escapements.
On the caseback, the sapphire crystal with a domed shape identical to the crystal in front, offers an exceptional view of the caliber 9012’s three-dimensional, symmetrical, oblique and open-worked architecture. The barrel, gear, remontoire, escapement and balance bridges are all skeletonized, accentuating the litheness of their geometric shapes.
The two wide golden barrels contrast with the movement’s finishes. The wheel spokes are tangent curves with a unique profile, a Bernhard Lederer hallmark. The variety and exceptional execution of hand-finishing displayed here– polishing, beveling (incoming and outgoing angles), graining, engraving, satin-finishing, matte and glossy surfaces –further sublimate the movement’s spectacular three-dimensional architecture.
Model: Lederer Central Impulse Chronometer Steel and Rose Gold Versions
Hours, minutes, small seconds at 8 and 11 o’clock
5N rose gold (25 pieces)/ 904L stainless steel (25 pieces)
Case back: Open, sapphire crystal with anti-reflective coating on both sides
Water resistance: 3 ATM
Guilloché (exclusive Lederer pattern) with two interlaced circles forming a figure eight opening
Rhodium black on rose gold version; Pacific Green on 904L version
Number of components: 210
Number of jewels: 45 rubies
Frequency: 21,600 vibrations per hour (3 Hz)
Two independent gear trains
Two constant-force remontoires
Double wheel escapement with central impulses
Finishing: Frosted with hand-beveled bridges, wheels with circular grinding and hand-beveled spokes.
Power Reserve: 38 hours
CHF 136,800 (taxes not included)