The appearance of the Radiomir 1940 is classic, with the large cushion case – 45mm in diameter – of pure minimalist lines, its lugs formed out of the block of the case, a polished bezel and a cylindrical winding crown.
The case is made of two different types of titanium: grade 2 titanium for the caseband - a light alloy, resistant to corrosion and allowing complex machinings; and grade 5 titanium for the bezel and crown - an alloy which differs from the previous one in that it can be polished. The case is water-resistant to 10 bars (100m).

The brown dial is made with the characteristic sandwich construction created by Panerai in the 1930s to ensure the maximum visibility and legibility. The special Super-LumiNova® ecru gives the dial a vintage aspect. Also evoking the past of the brand are the characteristic small seconds dial at 9 o’clock, a unique moving element of the minimalist dial.

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Radiomir 1940 3 Days Automatic Titanio 45mm (PAM00619). © Panerai

The P.4000 calibre can be admired through the sapphire caseback. This is the first manufacture automatic movement with a decentralised oscillating weight, completely designed and made in Panerai’s manufacture in Neuchâtel. The decentralised rotor, much smaller in diameter than the calibre itself, enables the thickness of the movement to be substantially reduced (3.95 mm). The oscillating weight, made of tungsten, is very small and fitted within the movement instead of superimposed upon it. It winds in both directions, enabling it to accumulate a power reserve of three days, thanks to the use of two spring barrels connected in series. The P.4000 calibre also has the device which stops the balance when the winding crown is pulled out, so that the watch can be perfectly synchronised.

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The automatic mechanical P.4000 calibre is executed entirely by Panerai. © Panerai

The Radiomir 1940 3 Days Automatic Titanio (PAM00619) is supplied with a brown buffalo leather strap, with contrasting stitching.