The first vintage detail of the new Radiomir 3 Days Acciaio watches is the 12-sided bezel in brushed steel, with smoothed, polished angles and the same engraving as the historic models, using the lettering of the time. The bezel is screwed onto the classic cushion caseband of the Radiomir and, together with the screwed back forming the rear part of the case, like the historic watches it has an elegant symmetrical construction divided into three parts, clearly visible when looking at the case in profile. The case is made of stainless steel (AISI 316L) and it is the same classic size as that of vintage Panerai watches, 47 mm in diameter.
Another fascinating element inspired by the historic models is the dial. Remarkably simple and minimalist, with the sandwich structure which maximises the legibility of the large figures and markers, the dial is available in black (PAM00685), the colour of the vintage model, or in shaded brown (PAM00687), a completely new colour in the Panerai collections, which evokes the lightening effect which the Radiomir, the luminous substance based on radium, had on the original black dials.
On the back of the case, a large porthole with its sapphire window reveals the P.3000 hand-wound mechanical movement, completely created in the Panerai Manufacture in Neuchâtel. The calibre measures 161⁄2 lignes – a size typical of the period models – and it has large, brushed- finish bridges covering the greater part of the wheelwork, a large balance wheel 13.2 mm in diameter and two spring barrels, which provide a power reserve of three days. The P.3000 movement also has the device for quickly changing the time, enabling the hour hand to be moved backwards or forwards in jumps of one hour, without interfering with the movement of the minute hand or the running of the watch.