MB&F’s Longhorn isn’t just a chronograph—it’s a rule-breaking, time-bending marvel that redefines precision with a rebellious streak.
The LM Sequential Flyback Longhorn is a timepiece that redefines haute horology. Released in celebration of MB&F’s 20th anniversary and limited to just 20 pieces, it exemplifies the brand’s relentless pursuit of innovation, artistry, and mechanical mastery. Designed in collaboration with independent master watchmaker Stephen McDonnell, this remarkable evolution of MB&F’s groundbreaking chronograph series offers unparalleled functionality wrapped in an aesthetic that reflects both heritage and futuristic vision.
At the heart of the LM Sequential Flyback Longhorn lies a fully integrated dual chronograph flyback mechanism. Unlike conventional chronographs that operate in a linear fashion, this masterpiece features MB&F’s proprietary “Twinverter” binary switch, a revolutionary system that enables an unprecedented level of versatility. Wearers can seamlessly transition between multiple timing modes, including independent, split-second, cumulative, and lap-timer functions. The addition of the flyback feature, initially conceived for aviation, enhances its capabilities by allowing instant resetting and restarting with a single push, eliminating timing disruptions and ensuring precision. This innovation draws inspiration from early 20th-century aviation timepieces, particularly the Longines Weems Second-Setting Watch, which was developed in the 1930s to improve navigational accuracy for pilots by allowing them to synchronize with radio time signals.
The design of the LM Sequential Flyback Longhorn pays homage to MB&F’s legacy while embracing a bold and dynamic aesthetic. The elongated, sculptural lugs, or “long horns,” reference an early MB&F design concept from 2009 that has been revisited and refined for this anniversary release. The dual-hole lug system provides both comfort and aesthetic balance on various wrist sizes. The dial layout is an exhibition of kinetic art, with two black lacquered sub-dials set in striking contrast against a rhodium-plated base plate. Blued hands add a vivid pop of color, reinforcing the meticulous attention to detail. A proudly displayed balance wheel at 12 o’clock harks back to classical watchmaking traditions while underscoring MB&F’s commitment to showcasing mechanical beauty. The stainless steel case, measuring 44mm in diameter with a height of 18.2mm, ensures a commanding yet wearable presence on the wrist.
MB&F has always been known for its refusal to adhere to conventional watchmaking wisdom, and the LM Sequential Flyback Longhorn continues that legacy. Traditional chronographs suffer from energy inefficiencies when running multiple timing functions, but MB&F’s innovative clutch system significantly mitigates these losses. The sequential mechanism, paired with the Twinverter, opens up entirely new possibilities for timing applications, blurring the line between conventional chronographs and modern precision instruments. The movement’s finishing remains true to MB&F’s exceptional standards, featuring a 3Hz (21,600 vph) frequency, Breguet overcoil, and Geneva wave detailing. The attention to detail in hand-polished bevels, internal angles, and engravings ensures that this timepiece is not just mechanically superior, but also an artisanal masterpiece. This dedication to craftsmanship echoes the meticulous work of Breguet himself, whose tourbillon invention in the late 18th century set the standard for precision in mechanical watches and remains a cornerstone of haute horology today.
By introducing such a groundbreaking mechanism, the LM Sequential Flyback Longhorn is poised to leave a lasting impact on the watch industry. Its complex yet user-friendly chronograph system may inspire other high-end brands to rethink their approach to multi-functional timing instruments. MB&F’s ability to balance mechanical ingenuity with aesthetic daring will undoubtedly influence future horological designs, encouraging more brands to embrace the avant-garde.
Beyond its technical brilliance, the LM Sequential Flyback Longhorn tells a story that resonates with collectors and enthusiasts alike. It embodies two decades of relentless innovation by MB&F and pays tribute to the pioneering spirit of independent watchmaking. The tactile engagement of its complex pushers, the mesmerizing oscillation of its exposed balance wheel, and the rhythmic dance of its dual chronographs create an emotional bond between wearer and timepiece. This watch is not just a timekeeping instrument—it is a statement of excellence, a testament to artistic craftsmanship, and a harbinger of the future of watchmaking. With only 20 pieces in existence, it offers a rare opportunity to own a piece of horological history that challenges conventions, sparks emotions, and defines the future of haute horology.
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