Seventy years after unveiling the groundbreaking Ladybird Bullet, Blancpain revisits one of its most significant achievements in mechanical miniaturisation with the Lady B. Prior to the widespread adoption of quartz technology in the 1970s and 80s, watches for women and gem-set tickers alike all used mechanical movements, thus prompting a meaningful race to develop smaller and thinner calibres. Of course, quartz made short work of all this, but also opened opportunities for pure manufactures such as Blancpain. The Manufacture in Villeret has maintained an uncompromising maxim: it has never made a quartz watch, and it never will. The sculptural Lady B stands as a pure reaffirmation of that philosophy.

Why sculptural, you might ask? Well, take a look at it and you will have your answer. The new Lady B is in a shape that is hard to define, except perhaps when you consider the 1956 original, which was called the Ladybird Bullet. The new 2026 model pays direct homage to Betty Fiechter, a pioneering figure in watchmaking who became the first woman to lead and own a Swiss watch firm. Alongside her nephew Jean-Jacques Fiechter, she famously championed the now-iconic Fifty Fathoms in 1953 before making a somewhat more muted mark in 1956 with the Ladybird. The bullet-shaped watch was a landmark in its own moment, with the hand-wound calibre R55 proving that diminutive proportions could accommodate a robust architecture. The challenge for smaller movements, even today, is robustness and accuracy; by all accounts, the R55 was not wanting on either count.

This calibre was, on its debut, the smallest series-produced round mechanical movement in history at 11.85mm across. Blancpain notes that the R55 retains the title of smallest round mechanical manual-winding movement ever made in series. You might recall a famous example from Jaeger-LeCoultre but that was a shaped movement. Notably, the R55 is a key example of a movement with a distinctive going train – where the standard movement has four wheels, this one has an additional wheel that better regulates the force delivered to the regulating organs. It also featured shock protection for the balance wheel, which is a staple today.

Rather than simply delivering a nostalgic reissue, which would have been just fine in our opinion, the contemporary Lady B reinterprets mid-century biomorphic design. At press time, we have not experienced the watch in the metal and thus cannot comment. What we can say is that the Lady B is notably not gem-set, and even the dial is simple opaline. Applied gold indices are paired with pencil-style hands, while a mirror-polished rehaut visually deepens the spherical volume.

Occupying an extraordinarily compact 2.9cm³, the watch measures 19mm in diameter and 13.2mm in thickness, sitting on the wrist like a golden pebble, or bubble, if you prefer those images. The case entirely dispenses with traditional lugs; instead, an integrated 10mm x 1.6mm passage is machined directly through the solid metal, allowing a double-tour calf leather strap to glide seamlessly through the case body. Offered in stainless steel or 5N red gold, the two-part case conceals its junction line through intricate hand-polishing to achieve a monolithic presence.

Within the remarkable exterior beats something other than a resuscitated R55, which you would not know because the Lady B does not have an exhibition caseback. Anyway, Blancpain has opted to put its recent calibre 615, one of the smallest self-winding mechanical movements, into service. The short story here is that the movement’s relatively compact size made it ideal for the Lady B, and it is. We would have liked to have discovered a movement with more character to it though, like the R55. That sort of glorious idiosyncrasy is probably too much, but something purpose-built for this model feels appropriate. No doubt we will follow up on this story shortly once the real Lady B arrives.

For more on the latest in luxury watch reads, click here.