The Panerai Radiomir is one of the most highly thought and signature collection of the brand. Before its launch it was first revealed to Submarine Group of the Royal Italian Navy in 1936. The name "Radiomir" was originated by the combination of zinc sulphide and radium bromide used for creating a luminous material watch that could be relied on in the dark. The series was thus the choice for Italian divers diving in the Mediterranean Sea during WWII. Aesthetics of the case carries an authentic vintage aura with its curved and rounded looks. The Panerai Radiomir PAM00574 has a hand wound mechanical movement with 3 Days of power reserve.