In the horological world, few brands have made as significant an impact in two decades as MB&F. Founded in 2005 by Maximilian Büsser, MB&F—short for Maximilian Büsser & Friends—has consistently pushed the boundaries of watchmaking, blending art and engineering to create timepieces that are both innovative and visually striking. As the brand celebrates its 20th anniversary in 2025, it pays homage to its legacy with the release of the “Longhorn” Limited Editions: the LM Perpetual Longhorn and the LM Sequential Flyback Longhorn.
MB&F’s journey began with a vision to craft “Horological Machines” that defy traditional watchmaking norms. Over the years, the brand has introduced a series of groundbreaking timepieces, each reflecting a unique blend of avant-garde design and mechanical mastery. The Legacy Machine (LM) series, launched in 2011, marked a departure from the futuristic aesthetics of the Horological Machines, drawing inspiration from classical watchmaking while infusing it with MB&F’s distinctive creativity.
The “Longhorn” design first emerged in 2021 with a unique piece commemorating the 10th anniversary of the LM1 series. This prototype featured elongated lugs—dubbed “longhorns”—which added a dynamic and robust character to the watch’s profile. The design was well-received, sparking interest among collectors and enthusiasts. In 2025, MB&F revisits this concept, integrating the longhorn lugs into two of its most celebrated models to create the LM Perpetual Longhorn and the LM Sequential Flyback Longhorn.
The LM Perpetual Longhorn is a testament to MB&F’s commitment to horological excellence. Limited to 20 pieces, this timepiece showcases the brand’s award-winning perpetual calendar movement, developed in collaboration with independent watchmaker Stephen McDonnell.
Housed in a 44mm stainless steel case, the LM Perpetual Longhorn features the signature elongated lugs that seamlessly blend form and function. The case, composed of 69 components, measures 17.5mm in thickness and offers water resistance up to 30 meters. The rhodium-plated base plate provides a sleek backdrop for the glossy black lacquer sub-dials, which display the day, date, month, and leap year indicators. Blued steel hands add a touch of elegance, enhancing legibility and complementing the monochromatic palette.
At the heart of the LM Perpetual Longhorn lies a manually wound movement comprising 581 components. Operating at a frequency of 18,000 vibrations per hour, it boasts a 72-hour power reserve. The innovative “mechanical processor” system reimagines the traditional perpetual calendar, eliminating common issues such as date-skipping and jamming. This system allows for seamless adjustments without the risk of damaging the movement, ensuring both reliability and user-friendliness.
The watch is paired with a calf leather strap, secured by a stainless steel folding buckle. The elongated lugs not only enhance the watch’s aesthetic appeal but also ensure a comfortable fit on the wrist, making it suitable for daily wear despite its complex mechanics.
Complementing the LM Perpetual Longhorn is the LM Sequential Flyback Longhorn, another limited edition of 20 pieces. This timepiece builds upon MB&F’s pioneering work in chronograph design, offering a dual chronograph with innovative functionalities.
Sharing the same 44mm stainless steel case and elongated lugs as its perpetual calendar counterpart, the LM Sequential Flyback Longhorn stands out with its intricate dial layout. The rhodium-plated base plate serves as a canvas for the black lacquer sub-dials, which are symmetrically arranged to display the chronograph functions. Blued steel hands provide a vivid contrast, ensuring clarity and enhancing the watch’s visual appeal.
The manually wound movement, developed in collaboration with Stephen McDonnell, features a fully integrated dual chronograph flyback system. Operating at 21,600 vibrations per hour, it offers a 72-hour power reserve. The standout feature is the “Twinverter” switch, which allows for multiple timing modes, including independent, simultaneous, and sequential chronograph operations. This versatility makes the LM Sequential Flyback Longhorn a powerful tool for precise time measurement.
Similar to the LM Perpetual Longhorn, this model comes with a calf leather strap and stainless steel folding buckle. The thoughtful design of the elongated lugs ensures a secure and comfortable fit, accommodating various wrist sizes.
The release of the “Longhorn” Limited Editions is a fitting tribute to MB&F’s 20-year journey of innovation and artistry. These timepieces encapsulate the brand’s ethos of challenging conventional watchmaking and exploring new creative horizons.
By revisiting the longhorn lug design, MB&F pays homage to its earlier creations while infusing them with contemporary elements. The use of stainless steel, a material less common in the brand’s previous offerings, reflects a modern approach, appealing to both long-time collectors and new enthusiasts.
As MB&F embarks on its third decade, the “Longhorn” editions signify a commitment to continual evolution. The integration of advanced mechanics with bold design choices sets the stage for future innovations, promising exciting developments in the years to come.
• Case Dimensions: 44mm diameter x 17.5mm thickness
• Case Material: Stainless steel
• Water Resistance: 30 meters
• Movement: Manually wound, 581 components
• Power Reserve: 72 hours
• Frequency: 18,000 vibrations per hour
• Functions: Hours, minutes, perpetual calendar (day, date, month, leap year), power reserve indicator
• Strap: Calf leather with stainless steel folding buckle
• Case Dimensions: 44mm diameter x 17.5mm thickness
• Case Material: Stainless steel
• Water Resistance: 30 meters
• Movement: Manually wound, fully integrated dual chronograph flyback system
• Power Reserve: 72 hours
• Frequency: 21,600 vibrations per hour
• Functions: Hours, minutes, dual chronograph with flyback and Twinverter switching system
• Strap: Calf leather with stainless steel folding buckle
For seasoned collectors and new enthusiasts alike, the MB&F 20th Anniversary Longhorn Limited Editions represent a rare opportunity to own a piece of horological history. The limited production of only 20 pieces per model ensures exclusivity, while the distinctive longhorn lugs and cutting-edge mechanics make these watches both an artistic statement and a technical masterpiece.
Given MB&F’s track record, these timepieces are expected to appreciate in value, making them a solid investment in addition to their aesthetic and mechanical appeal.
MB&F has once again proven why it stands at the pinnacle of independent haute horology. With the LM Perpetual Longhorn and LM Sequential Flyback Longhorn, the brand celebrates two decades of bold innovation while paving the way for future creations. These limited-edition watches capture the essence of MB&F—challenging conventions, embracing creativity, and redefining what a timepiece can be.
Whether you’re a collector, a horology enthusiast, or simply an admirer of fine craftsmanship, the MB&F 20th Anniversary Longhorn Limited Editions are a testament to the brand’s extraordinary journey. With their unique design, impeccable mechanics, and historical significance, they are sure to leave an indelible mark on the world of luxury watchmaking.
(photo credits: MB&F / www.mbandf.com)
A Legacy of Innovation
MB&F’s journey began with a vision to craft “Horological Machines” that defy traditional watchmaking norms. Over the years, the brand has introduced a series of groundbreaking timepieces, each reflecting a unique blend of avant-garde design and mechanical mastery. The Legacy Machine (LM) series, launched in 2011, marked a departure from the futuristic aesthetics of the Horological Machines, drawing inspiration from classical watchmaking while infusing it with MB&F’s distinctive creativity.
The “Longhorn” Concept
The “Longhorn” design first emerged in 2021 with a unique piece commemorating the 10th anniversary of the LM1 series. This prototype featured elongated lugs—dubbed “longhorns”—which added a dynamic and robust character to the watch’s profile. The design was well-received, sparking interest among collectors and enthusiasts. In 2025, MB&F revisits this concept, integrating the longhorn lugs into two of its most celebrated models to create the LM Perpetual Longhorn and the LM Sequential Flyback Longhorn.
LM Perpetual Longhorn
The LM Perpetual Longhorn is a testament to MB&F’s commitment to horological excellence. Limited to 20 pieces, this timepiece showcases the brand’s award-winning perpetual calendar movement, developed in collaboration with independent watchmaker Stephen McDonnell.
Design and Aesthetics
Housed in a 44mm stainless steel case, the LM Perpetual Longhorn features the signature elongated lugs that seamlessly blend form and function. The case, composed of 69 components, measures 17.5mm in thickness and offers water resistance up to 30 meters. The rhodium-plated base plate provides a sleek backdrop for the glossy black lacquer sub-dials, which display the day, date, month, and leap year indicators. Blued steel hands add a touch of elegance, enhancing legibility and complementing the monochromatic palette.
Movement and Mechanics
At the heart of the LM Perpetual Longhorn lies a manually wound movement comprising 581 components. Operating at a frequency of 18,000 vibrations per hour, it boasts a 72-hour power reserve. The innovative “mechanical processor” system reimagines the traditional perpetual calendar, eliminating common issues such as date-skipping and jamming. This system allows for seamless adjustments without the risk of damaging the movement, ensuring both reliability and user-friendliness.
Strap and Wearability
The watch is paired with a calf leather strap, secured by a stainless steel folding buckle. The elongated lugs not only enhance the watch’s aesthetic appeal but also ensure a comfortable fit on the wrist, making it suitable for daily wear despite its complex mechanics.
LM Sequential Flyback Longhorn
Complementing the LM Perpetual Longhorn is the LM Sequential Flyback Longhorn, another limited edition of 20 pieces. This timepiece builds upon MB&F’s pioneering work in chronograph design, offering a dual chronograph with innovative functionalities.
Design and Aesthetics
Sharing the same 44mm stainless steel case and elongated lugs as its perpetual calendar counterpart, the LM Sequential Flyback Longhorn stands out with its intricate dial layout. The rhodium-plated base plate serves as a canvas for the black lacquer sub-dials, which are symmetrically arranged to display the chronograph functions. Blued steel hands provide a vivid contrast, ensuring clarity and enhancing the watch’s visual appeal.
Movement and Mechanics
The manually wound movement, developed in collaboration with Stephen McDonnell, features a fully integrated dual chronograph flyback system. Operating at 21,600 vibrations per hour, it offers a 72-hour power reserve. The standout feature is the “Twinverter” switch, which allows for multiple timing modes, including independent, simultaneous, and sequential chronograph operations. This versatility makes the LM Sequential Flyback Longhorn a powerful tool for precise time measurement.
Strap and Wearability
Similar to the LM Perpetual Longhorn, this model comes with a calf leather strap and stainless steel folding buckle. The thoughtful design of the elongated lugs ensures a secure and comfortable fit, accommodating various wrist sizes.
Celebrating Two Decades of Horological Artistry
The release of the “Longhorn” Limited Editions is a fitting tribute to MB&F’s 20-year journey of innovation and artistry. These timepieces encapsulate the brand’s ethos of challenging conventional watchmaking and exploring new creative horizons.
A Nod to the Past
By revisiting the longhorn lug design, MB&F pays homage to its earlier creations while infusing them with contemporary elements. The use of stainless steel, a material less common in the brand’s previous offerings, reflects a modern approach, appealing to both long-time collectors and new enthusiasts.
Looking to the Future
As MB&F embarks on its third decade, the “Longhorn” editions signify a commitment to continual evolution. The integration of advanced mechanics with bold design choices sets the stage for future innovations, promising exciting developments in the years to come.
Technical Specifications
LM Perpetual Longhorn
• Case Dimensions: 44mm diameter x 17.5mm thickness
• Case Material: Stainless steel
• Water Resistance: 30 meters
• Movement: Manually wound, 581 components
• Power Reserve: 72 hours
• Frequency: 18,000 vibrations per hour
• Functions: Hours, minutes, perpetual calendar (day, date, month, leap year), power reserve indicator
• Strap: Calf leather with stainless steel folding buckle
LM Sequential Flyback Longhorn
• Case Dimensions: 44mm diameter x 17.5mm thickness
• Case Material: Stainless steel
• Water Resistance: 30 meters
• Movement: Manually wound, fully integrated dual chronograph flyback system
• Power Reserve: 72 hours
• Frequency: 21,600 vibrations per hour
• Functions: Hours, minutes, dual chronograph with flyback and Twinverter switching system
• Strap: Calf leather with stainless steel folding buckle
The Collector’s Perspective
For seasoned collectors and new enthusiasts alike, the MB&F 20th Anniversary Longhorn Limited Editions represent a rare opportunity to own a piece of horological history. The limited production of only 20 pieces per model ensures exclusivity, while the distinctive longhorn lugs and cutting-edge mechanics make these watches both an artistic statement and a technical masterpiece.
Given MB&F’s track record, these timepieces are expected to appreciate in value, making them a solid investment in addition to their aesthetic and mechanical appeal.
Conclusion
MB&F has once again proven why it stands at the pinnacle of independent haute horology. With the LM Perpetual Longhorn and LM Sequential Flyback Longhorn, the brand celebrates two decades of bold innovation while paving the way for future creations. These limited-edition watches capture the essence of MB&F—challenging conventions, embracing creativity, and redefining what a timepiece can be.
Whether you’re a collector, a horology enthusiast, or simply an admirer of fine craftsmanship, the MB&F 20th Anniversary Longhorn Limited Editions are a testament to the brand’s extraordinary journey. With their unique design, impeccable mechanics, and historical significance, they are sure to leave an indelible mark on the world of luxury watchmaking.
(photo credits: MB&F / www.mbandf.com)
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