A formidable synthesis of technical acumen and outstanding artisanship, the Bernhard Lederer Central Impulse Chronometer InVerto watch is a triumph for its maker, and a piece that showcases innovational Haute Horlogerie in its purest form. Presented in a limited edition of only 18 pieces, and encased in black DLC steel, this striking new edition showcases the entire in-house movement on the dial side, resulting in a breathtaking, dynamic display. Already acclaimed for his revolutionary work on the escapement mechanism, this new edition affirms Lederer’s place at the highest echelon of the independent watchmaking genre.

Featuring an all-new prospective on his Central Impulse Chronometer movement, the entire calibre has been turned on itself, so what was previously visible only from the caseback on previous editions, now forms the façade of the InVerto model. Naturally, significant re-engineering was required in the creation of the piece, however given that Bernhard Lederer is a renowned within the industry as a creative force, such intensive development is entirely in-keeping with the innovational spirit of this extraordinary individual and also his St-Blaise atelier. 

Sized at 44mm with a height of 11.5mm, the 904L stainless steel casing has been treated with a stealthy black PVD coating providing the perfect touch of drama for the theatrical arrangement of the exposed components on the dial side, and its pronounced domed sapphire contributes further to the visual performance.  

In-keeping with the design language of the watch, the entire movement has been treated with a black coating, and while this gives the arrangement a contemporary feel, the hand-finishing is consistent with Lederer’s tradition of upholding fine old-school horological artistry and the result is spectacular. Rendered entirely by hand, polished, satin and brushed finishes offer contrast, while the flawless bevelling on the inward and outer angles add to the prestige of the in-house calibre. Endlessly fascinating for the wearer, the components which were, on previous models only seen from the rear view, are fully exposed revealing a layout that exhibits exceptional equipoise. 

A reimagination of the natural escapement, as envisaged first by Abraham Louis Breguet, and more recently by the great George Daniels, the Lederer Calibre 9012 is as complex in its conception as it is captivating to observe. Conceived to deliver optimal precision by having the most direct connection between the escapement and the balance, the movement features two separate gear trains, each of which are individually energised by a dedicated barrel, and which terminate at the two escapements, giving the mechanism a striking visual symmetry. Configured either side of a pivoting anchor, each escape wheel is governed by its own ten second remontoir, a tiny spring at its centre, which stores and then releases its energy in alternating bursts, as they regulate the oscillations of the large titanium balance wheel between them. 

Taking inspiration from Daniels’ accomplishments, which were created for use in his pocket watches, the German master watchmaker has taken those discoveries to the limits of their potential and realised the concept in this extraordinary wristwatch, which is designed to draw the eye in towards the alternating pulse of its mesmerising mechanical heartbeat.

Manufactured in-house to the most exacting tolerances, the components have to be as light and therefore less energy-sapping as possible, while also optimising the delicacy of contact where they engage with each other, all the while enhancing the isochronism and the consistency of the delivery of energy to the balance, in its technical sophistication and complexity, this is a mechanical calibre of superbly refined efficiency and precision.

An incredible contemporary masterpiece, the Bernhard Lederer Central Impulse Chronometer InVerto is presented in an exclusive series of only 18 pieces.