A model inheriting the Panerai Radiomir / [A new era of micro-rotors] The Panerai Cal.P.4000, a revolutionary new movement that achieves thinness, robustness, and high precision

By adopting a micro-rotor for the winding mechanism, the thickness of the movement has been reduced to 3.95 mm. Accordingly, the case is also thinner than before, creating a more refined look. At the same time, this model also inherits the original case of the Radiomir 1940, which was designed for the Italian Navy's commando submarines, and is therefore robust and durable.

New challenges in thinning

Panerai's first automatic movement with a micro-rotor is the Cal. P.4000. While many previous micro-rotor movements have focused on achieving the "thinness" required for luxury dress watches, Panerai's Cal. P.4000 combines greater precision with the robustness essential for a sports watch. Panerai's new Cal. P.4000 overturns conventional wisdom about micro-rotor movements. We examine its capabilities.