The Panerai Radiomir watch is so iconic that an updated version of the model is released each year; remaining true to its World War II origins but with a few new features added to each release. For instance, this Panerai Radiomir 1940 3 Days Automatic Acciaio PAM655 - acciaio meaning steel in Italian - is the first Radiomir to feature a white dial for a more sporty appearance. Its 42mm steel case is also slightly smaller than the average Panerai watch, has a see-through sapphire crystal caseback, and comes with a robust 3-day power reserve. This is thanks to the in-house manufactured P.4000 movement. Remaining true to its Italian Navy heritage, this Panerai Radiomir is water-resistant to 100 metres, and its bright, high-contrast white dial and calf assolutamente strap gives it a sporty look, while still in-keeping with its traditional iconic appearance.