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MB&F unveils a new Legacy Machine Perpetual EVO. Now available with a green CVD dial, it joins the blue CVD dial, orange CVD dial and black PVD dial versions launched in 2020. All editions feature a sporty closely fitted, integrated rubber strap.

44MM Case in Zirconium & Titanium

The 44mm Legacy Machine Perpetual EVO case comes in either zirconium or titanium and was designed from the ground up to emphasise the openness and clarity of the movement. Featuring a specially developed monobloc shock-absorbing system – “FlexRing” – that makes for the most robust Machine ever to emerge from MB&F. The LM Perpetual Engine, designed by Stephen McDonnell, an award-winning perpetual calendar that replaces traditional constructions with an innovative mechanical processor.

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MB&F Legacy Machine Perpetual Titanium Green
MB&F Legacy Machine Perpetual Titanium Green

New EVO Case Design

Although the 44mm diameter is unchanged from its 2015 iteration, the new EVO case design features a no-bezel construction, with the domed sapphire crystal fused directly to the case. The increased openness of this design highlights the balance between the legibility of LM Perpetual EVO’s calendar indications and the cinematic play of the engine components — surmounted by the iconic MB&F hovering balance wheel.

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MB&F Legacy Machine Perpetual Titanium Green
MB&F Legacy Machine Perpetual Titanium Green

Focus on Tactility & Ease of Adjustment

The previously circular pushers for adjusting the perpetual calendar have been enlarged into double-sprung oblong actuators, boosting the tactile comfort and ease of adjustment. For the first time in any MB&F creation, the LM Perpetual EVO is rated at 80m of water resistance, enabled by its screw-down crown. A small, but essential, detail of implementing a screw-down crown is the débrayage of the winding stem, disengaging the crown from the winding mechanism when it is pushed in and tightened, which eliminates the chance of manually over-winding the mainspring barrel.

MB&F Legacy Machine Perpetual Titanium Green
MB&F Legacy Machine Perpetual Titanium Green

FlexRing Shock Dampener

An additional new element of the LM Perpetual EVO is the FlexRing: an annular dampener fitted between case and movement, providing shock protection along the vertical and lateral axes. Machined from a single block of stainless steel, the dampener imparts exceptional robustness to the perpetual calendar, a function that is associated with classicism and elegance, but is arguably the most pragmatic and utilitarian of all the high complications.

MB&F Legacy Machine Perpetual Titanium Green
MB&F Legacy Machine Perpetual Titanium Green

When Stephen McDonnell set out to redesign the perpetual calendar for MB&F, he proposed a system that rethought the entire mechanical basis of the complication. The LM Perpetual uses a “mechanical processor” consisting of a series of superimposed disks. This revolutionary processor takes the default number of days in the month at 28 — because, logically, all months have at least 28 days — and then adds the extra days as required by each individual month. This ensures that each month has exactly the right number of days, and removes the possibility of the date jumping incorrectly. An inbuilt safety feature disconnects the quickset pushers during the date changeover, so that even if the pushers are accidentally actuated whilst the date is changing, there is no risk of damage to the movement.

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